JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Jingwen Ji,Rui Jiang,Pengjuan Zhou,Jing Hou,Lijuan Zhai,Lili He,Jian Sun,Dong Tang
Plastic pollution poses a significant threat to the environment and human health, prompting the search for sustainable alternatives. Poly(butylene adipate-co-terephthalate) (PBAT), as a biodegradable material, offers a solution to replace polyolefin plastic. In this study, the effects of silane-modified potato waste (M-PW) content on the interfacial and physical properties of PBAT composites were investigated. Results indicate that increasing M-PW content deepens the color of the composites. FTIR analysis confirms successful grafting of the silane coupling agent γ-aminopropyl triethoxysilane (KH550) onto potato waste, with the composites forming a physical mixture of the two phases. M-PW exerts complex effects on mechanical properties: tensile strength first decreases and then increases, while impact strength declines continuously. Incorporating M-PW reduces the thermal stability of PBAT but enhances the composites' crystallization and melting properties, as well as their hydrophobicity. XRD analysis reveals that M-PW lowers the composites' crystallinity without altering the crystal structure of PBAT. SEM images demonstrate poor adhesion between high-load M-PW and the PBAT matrix. This study highlights the potential of agricultural waste in biodegradable plastics, but further research is required to improve M-PW dispersion and compatibility within the PBAT matrix, thereby enhancing mechanical performance.
研究领域:
高分子材料
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生物降解塑料
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农业废弃物利用
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复合材料科学
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环境功能材料
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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2022
·
IF 5.204
Yunxiao Dong,Jinggang Wang,Yong Yang,Qianfeng Wang,Xiaoqin Zhang,Han Hu,Jin Zhu
Poly(butylene adipate- co -terephthalate) (PBAT) is a flexible aliphatic/aromatic copolyester commercialized for degradable plastics, while the slow degradation rates and poor barrier properties limit its applications. Consequently, it is highly desirable to develop materials with faster degradation rates and enhanced barrier properties. Here, we synthesized poly(butylene diglycolate- co -furandicarboxylate) (PBDF) copolyesters by transesterification and melt polycondensation. The NMR spectra confirmed their structure and composition. Besides, the thermal, mechanical, permeable and degradable properties were characterized thoroughly. It was found that the properties were dependent on chemical composition and crystallinity. Actually, the introduction of diglycolic acid (DGA) comonomer hinders the crystallization and all the copolyesters appear as semicrystalline polyesters except for PBDF80. Among them, PBDF40 possesses outstanding mechanical properties with an elastic modulus of 165 MPa, tensile strengths of 54 MPa, and elongations of break of 654%. Moreover, the CO 2 and O 2 barrier properties of PBDF40 are 68.6 and 45.9 times higher than those of PBAT. PBDFs also exhibit accelerated rates in hydrolysis and composting degradation, which could be attributed to the enhanced hydrophilicity due to the electronegativity of ether-oxygen atoms in DGA. In particular, the mass loss of PBDF40 reaches 46% and 42% after 28 days of CALB enzymatic degradation and 8 weeks of compost degradation, respectively. These results highlight that the synthesized polyesters, especially PBDF40, demonstrate potential application in food packaging.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ying Sun,Bo-Yu Peng,Yuan Wang,Xuejiang Wang,Siqing Xia,Jianfu Zhao
The environmental risks associated with microplastics from biodegradable plastics are an emerging concern, but the roles of biofilm formation and biodegradation in the environmental behaviors of biodegradable microplastics have not been clarified. Here, we investigated the adsorption and desorption performance of Cu(II) on the poly(butylene adipate- co -terephthalate) (PBAT) microplastics and explored the roles of biofilms and biodegradation during the adsorption. The maximum adsorption quantities of Cu(II) by the pristine PBAT, the biofilm-covered PBAT, and the biodegraded PBAT were 140.547 µg·g −1 , 192.197 µg·g −1 , and 172.065 µg·g −1 , respectively. The biodegradation increased the Cu(II) adsorption on the PBAT by 24.43%, which was due to the changes in physicochemical properties (e.g., a high surface area to volume ratio, high crystallinity, and more oxygenated groups). The surface of PBAT covered by biofilm contained oxygen- and nitrogen-containing functional groups, which could complex with more Cu(II), thus making the promoting effect of biofilm on adsorption stronger than that of biodegradation. The adsorbed Cu(II) on the surface of the biodegraded PBAT had a remarkable desorption hysteresis and was less impacted by the presence of FA, indicating that PBAT after biodegradation could transport the adsorbed heavy metals over long distances, which was not observed on the biofilm-covered PBAT. Our findings highlight the critical effects of plastic degradation on the environmental behaviors of petro-based microplastics, which helps assess the environmental fate of biodegradable microplastics in aquatic systems.
研究领域:
环境科学
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生物学
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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Shuai Li,Mo Niu,Haoshui Yu,Xueying Song
Bio-degradable plastics have gained significant attention due to their biodegradability and environmental friendliness. However, how to improve the degradation rate of PBAT/PLA composites in aqueous environments is still a challenge. In this study, a green processing technology was proposed to achieve the rapid degradation of PBAT/PLA. By using lignin as an intermediate medium and adopting a continuous batch feeding strategy, the compatibility and biodegradability of PBAT/PLA composite materials are simultaneously improved in the absence of compatibilizers. The resulting PBAT/PLA/lignin films demonstrate excellent mechanical, water barrier, and degradation properties. The elastic modulus ( E ), tensile strength ( σ b ) and elongation at break ( ε b ) of PBAT/PLA/2%lignin are 124.2 MPa, 45.5 MPa, and 737%, respectively. The weight loss rate of the PBAT/PLA/10%lignin film after hydrolysis for 60 h was 30.0 wt%, which was 316% higher than that of the PBAT/PLA film. This sustainable and green processing strategy promotes the application of lignin in the field of composite materials, while solving the problems of poor mechanical properties and slow hydrolysis rate of PBAT/PLA composite materials.
研究领域:
材料科学
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高分子科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xiaofang Liu,Yong Liu,Min Fan,Kunpeng Qian,Wenya Ma,Dan Li,Li Li
Starch is a natural polymer material that is widely sourced, biodegradable, and non-toxic. However, the application of starch is hindered by its hydrophilicity and lack of biological activity. In this study, ε-polylysine hydrochloride (ε-PLH) was grafted onto starch for improving antibacterial properties of starch and weakening its hydrophilicity. Subsequently, a new type of active packaging film was prepared by blending polylactic acid (PLA), polybutylene adipate terephthalate (PBAT) and grafted starch (ε-PLH-g-starch) using the melt extrusion method. ε-PLH-g-starch/PLA/PBAT film can effectively inhibit Escherichia coli and Staphylococcus aureus with inhibition rates of 48.62 ± 2.43 % and 57.31 ± 1.65 %, respectively. The addition of ε-PLH-g-starch also significantly improved the tensile strength, optical properties and barrier properties of the films. As a verification experiment, the application of ε-PLH-g-starch/PLA/PBAT film can effectively inhibit the protein hydrolysis, microbial growth and fat oxidation of beef, and extend the shelf life of beef at 4 °C from 7 to 14 days.
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产品关联
DOI
PubMed
高影响因子
POLYMER COMPOSITES
·
2023
·Vol. 44
·期 11
·7876-7886
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IF 5.2
Xiao Zhan,Junzhuo Sun,Daohai Zhang
This study is aiming to prepare the porous PBAT/modified zeolite composite by the simple, rapid, and efficient method of preparing them by the solution coating process with modified zeolite as adsorbent, as well as with PBAT as carrying agents and with ethanol as porogenic agent. Some influencing factors for adsorbing PBAT/modified zeolite composite membrane in Lead-Ion-Heavy Metal wastewater were researched in this paper, including the effects of zeolite content, modifier type, initial pH, pore-making agent, adsorption time, adsorption temperature, initial concentration, and feeding quantity. In addition, the adsorption processes of the porous PBAT/modified zeolite composite membrane are studied by means of the adsorption kinetics and adsorption isotherm models. The finding shows the kinetic data were consistent with the pseudo-second-order model, and the data fitting of isothermal adsorption experiment is closer to the Langmuir adsorption model, which is a single-molecule adsorption process and belongs to chemisorption, with a saturation adsorption amount of about 106.3 mg/g. Therefore, zeolite has great prospects for the removal of Pb(II) in wastewater, and provides a theoretical basis for the efficient treatment of heavy metal-containing wastewater. Highlights A composite film that can effectively remove Pb(II) from water was prepared. The composite exhibits rational pore structure and high specific surface area. This composite has advantages of biodegradability and reproducibility.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Yanjun Sun,Haihao He,Xuehua Jia,Meiqiong Chen,Ning Chen,Yinghong Chen
In this study, the biaxially stretching and reactive blending strategies were combined to fabricate the high-performance antimicrobial biodegradable polybutylene adipate-terephthalate (PBAT)/polylactic acid (PLA) based composite film with polyhexamethylene guanidine hydrochloride (PHMG) being as the efficient antimicrobial agent. Various measurements, including scanning electron microscopy (SEM), Fourier transform infrared (FTIR) analysis, 2D-small angle X-ray scattering (2D-SAXS), gas barrier test, mechanical property test, antimicrobial activity test, etc., were employed to carefully characterize the obtained films. The experimental results showed that the biaxially stretching could induce the orientation of polymer molecular chains and formation of submicron-thick layered thin-lamella structures of PLA dispersed phases in PBAT matrix in the presence of initiator dicumyl peroxide (DCP) and PHMG, thus significantly enhancing the crystallinity and mechanical properties of the obtained film, as well as improving the gas barrier and hydrophilicity-oleophobicity characteristics. At a stretching ratio of 3.5 × 3.5, the tensile strength of the prepared film could reach 61.9 MPa, and meanwhile the oxygen and water vapor permeability rates were reduced to 3.1 × 10 −14 and 5.1 × 10 −14 g/(cm s Pa), respectively. In addition, the incorporation of PHMG endowed the film with highly efficient antibacterial properties, e.g. a film with 1.0–1.5 wt% PHMG content could achieve a 100 % inhibition rate against Escherichia coli (E. coli) and a 99.9 % inhibition rate against Staphylococcus aureus (S. aureus). The further lychee preservation experiments demonstrated that the PHMG incorporating PBAT/PLA composite film remarkably extended the preservation time of fruit (40 % longer). The prepared antimicrobial PBAT/PLA/PHMG film exhibited the high safety and economic benefits, thus showing the promising application prospects in the field of food packaging.
研究领域:
材料科学
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高分子科学
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食品包装
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抗菌技术
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可生物降解材料
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产品关联
DOI
高影响因子
POLYMER
·
2024
·
IF 4.1
Caiqi Liu,Fei Liu,Tao Yang,Caohong Chen,Yanyan Lin,Jinggang Wang,Jin Zhu
The preparation of copolymers containing lactyl unit by direct melt polymerization of lactic acid has been a big challenge, especially for those with high molecular weight ( M n ). In this paper, lactic acid was converted to bifunctional monomer ( i.e. SLA) suitable for direct polycondensation via alcoholysis of cyclic anhydride. A series of PBALT copolyesters were synthesized by replacing adipic acid with SLA in order to introduce lactyl unit to poly(butylene adipate- co -terephathalate) (PBAT) for enhanced barrier property and biodegradability. Results showed that a series of PBALT copolyesters with high M n of more than 41 000 g/mol can be successfully synthesized. The elongation at break remained high as the SLA content increased, while the melting temperature, the tensile modulus and strength gradually decreased. More importantly, the water vapour and gas barrier (towards CO 2 and O 2 ) property were increased by a factor of up to 1.62 and 4.3–4.4, respectively. In addition, the compost and enzymatic degradation rates of the copolyesters were accelerated by the introduction of the lactyl unit, which is mainly due to the reduction of the crystallinity. This study provides a facile strategy for the direct polycondensation of lactic acid, rather than using lactide, and thus establishes a new method for the development of biodegradable copolyesters containing lactyl unit with enhanced properties.
研究领域:
材料科学
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高分子化学
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产品关联
DOI
高影响因子
POLYMER
·
2024
·
IF 4.1
Jing Xu,Pingbo Zhang,Mingming Fan,Pingping Jiang,Shijun Chen,Xunxun Sheng
To improve the weak interaction between poly (butylene adipate‐co‐terephthalate) (PBAT) and poly (lactic acid) (PLA) blends, this study added modified metal-organic frameworks (MOFs) to enhance the interfacial bonding strength between PBAT and PLA. MOF-5 nanoparticles were synthesized by room temperature synthesis and modified with KH-560. PBAT/PLA/KH-560@MOF films were prepared by solvent casting. The microscopic morphology, mechanical properties, thermal properties, hydrophobicity, water vapor transmission rate and antimicrobial properties of the composite films were investigated. The results showed that KH-560@MOF nanoparticles were uniformly dispersed in the polymer matrix of PBAT and PLA, reducing phase interface defects. Mechanical properties of PLA/PBAT improved in the presence of KH-560@MOF. The breaking elongation and tensile strength values were maximized when adding 1 wt% KH-560@MOF. Doping of KH-560@MOF improves hydrophobicity and water vapor transmission rate of films. Zn 2+ in MOF-5 imparts antimicrobial properties to the film, showing antimicrobial activity against both Gram-positive and Gram-negative food-borne pathogens (i.e., E. coli and S.aureus ). This work enriched the design of compatibilizer for the PLA/PBAT blend and provided a novel approach for expanding the application of MOFs.
研究领域:
材料科学
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生物学
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食品科学
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产品关联
DOI
高影响因子
Collagen and Leather
·
2024
·Vol. 6
·期 1
·1-16
·
IF 0
Xu Hongsen,Shaoyu Jingwen,Jin Junyang,Li Ming,Ji Lei,Zhuang Wei,Tang Chenglun,Chang Zhiwei,Ying Hanjie,Zhu Chenjie
As one of the mainstream biodegradable materials, poly(butylene adipate-co-terephthalate) (PBAT) foams offer a sustainable alternative to traditional plastic foams, effectively reducing environmental pollution. However, the high cost and poor mechanical performance of PBAT foams impede their practical application. Herein, the glycidyl methacrylate-grafted biomass lignin (GML) was used to produce a PBAT/GML composite foam with good foaming performance and mechanical properties at high lignin-filling amounts by twin-screw melting free radical polymerization and supercritical CO 2 foaming process. The compatibility of GML in the PBAT matrix was improved due to the formation of ester bonds in modified lignin, endowing the PBAT/GML (PGML) composite foam with exceptional foaming performance. Additionally, the mechanical properties of PGML composite foam were remarkably enhanced due to the introduction of the abundant aromatic structures of GML and the construction of a stable covalent crosslinking network. The compressive strengths and compression modulus of the PGML foam were improved by 2.53 times and 2.47 times, while its bending strength and bending modulus were improved by 1.27 times and 3.92 times compared to the neat PBAT. This research affords a new strategy for developing low-cost biodegradable biomass PBAT/lignin composite foam materials with good foaming performance and mechanical properties. Graphical abstract
研究领域:
高分子材料
·
生物降解材料
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复合材料
·
化学合成
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DOI
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2023
·Vol. 31
·期 11
·4752-4769
·
IF 5.3
Yue Xiaopeng,Zhang Siqian,Xu Yang,Wang Zhiwei,Meng Ling
To demonstrate the influence of core-shell structure of microencapsulated ammonium polyphosphate (MCAPPs) on the flame-resistant and smoke inhibition efficiency of polymer composites, four kinds of MCAPPs with unilaminar or bistratal shells were fabricated and used to fabricate flame retarded Poly (butyleneadipate-co-terephthalate) (PBAT) composites. The MCAPP with cross-linked β-cyclodextrin as outer layer (MFAPP-CD 1 ) exhibited the highest flame-resistant efficiency. Accordingly, 75P/25MFAPP-CD 1 showed the highest char residue and densest char layer, also the lowest pHRR and THR, decreasing by 77.4 and 76.9% compared with PBAT, respectively. Meanwhile, the lowest SPR and TSP also demonstrated its excellent smoke inhibition effect due to the weakened catalytic effect of Ammonium polyphosphate (APP) on carbonization agent. As a result, a LOI value (33.2%) and UL-94 V0 rating could be achieved. A reasonable core-shell structure could improve the carbon forming capacity and reduce the release of volatiles during combustion. Polyhydroxy carbonization agent should be designed as the outer layer of bistratal MCAPP. Graphical Abstract
研究领域:
材料科学
·
聚合物工程
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产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Haibo Wang,Kaijie Yang,Guanyue Wen,Zhicheng Bai,Sitong Zhang,Wenwen Yu,Fengbo Zhu,Qiang Zheng
The successful pre-intercalation of ammonium salts with alkyl chain lengths ranging from C10 to C22 into nano-montmorillonite (MMT) significantly increases the interlayer spacing. After melt blending, the distribution of organically modified MMT in the PBAT matrix improves with the increase in the length of the pre-intercalated alkyl chains. Broad dielectric relaxation spectroscopy (BDRS) reveals that the length of the pre-intercalated chains has minimal effect on the glass transition temperature ( T g ). Furthermore, the α-relaxation transitions to lower temperatures with an increase in the length of the pre-intercalated chains, demonstrating the plasticization of rigid amorphous regions driven by alkyl chain mobility. Hydrolysis degradation analysis reveals that PBAT/MMT with C22 exhibits the slowest degradation rate, as dispersion effects effectively suppress water diffusion through the composite films by prolonging the effective diffusion pathways. These findings highlight the critical role of pre-intercalated chain length in modulating the molecular dynamics and degradability of PBAT/MMT composite films.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）