ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Ruizhe Li,Xuhai Zhu,Fuyan Peng,Fang Lu
The effective use of agricultural lignocellulose resources in biodegradable bioplastics has become the focus of people’s attention due to the inappropriate disposal of agricultural waste and plastic materials. However, the repulsive smell and uncontrollable color of agricultural lignocellulose-based materials limit their potential to replace common consumer plastics. In this study, when the corn stover (CS) meal enforced the PLA/PBAT matrix using the melt blending method, the lignin and hemicellulose components were shown to substantially impact the color darkening and unsavory odor release for the resultant bioplastic; therefore, an optimized scalable alkaline hydrogen peroxide oxidation that can be performed using traditional pulp and paper production lines was used to modify CS on a large scale (LCS) to enhance the properties of bioplastics fabricated with the PLA/PBAT matrix. As a result, the appearance color and odor character of the bioplastic enforced by LCS have been significantly improved compared to those of natural CS. In addition, the bioplastic (LCS/PLA/PBAT) exhibited good tensile strength (9.7 MPa), flexural strength (18.1 MPa), elongation at break (61.8%), and surface hydrophobicity with a contact angle value of 91.6°, which could meet the requirement of the Chinese National Standard for Packaging. The reinforcing effect of LCS on these performances lay in its rigid structure with a strong fiber network, high content of cellulose crystalline, and hydrophobic nature of lignin after treatment, as proven by FTIR, XRD, and SEM results. Therefore, our bioplastics filled with treated agricultural waste are attractive appearance-wise, economically competitive, and biodegradable, making them a sustainable alternative to common consumer plastics.
研究领域:
材料科学
·
环境科学
·
农业科学
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DOI
高影响因子
Environment & Health
·
2025
·
IF 6.3
Xuri Wu,Han Zhang,Jingwen Chen,Feng Tan,Rui Cai,Yan Wang
The release of micro/nanoplastics (MNPs) from biodegradable plastics in gastrointestinal environments due to photoaging, along with their associated mechanisms and potential cytotoxicity, is largely unknown. Here, we show that poly(lactic acid)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) films undergo ultraviolet photoaging, resulting in increased surface roughness and a higher quantity of MNPs on the surface. This aging process involves the generation of carbon- and oxygen-centered free radicals, chain scission, and the formation of oxidation products with hydroxyl and carbonyl groups. These MNPs can be released under water shear force, significantly increasing the normalized mass loss of aged films to approximately 0.128 mg/cm2 (18 times higher than that of unaged films in water). In the gastrointestinal environment, the normalized mass loss further increases to about 0.196 mg/cm2 (28 times higher), likely due to potential enzymatic digestion and ion-swelling effects. These MNPs, primarily composed of PLA, are smaller and carry more negative charges under gastrointestinal conditions. In the THP-1 cell model, these MNPs affect cell viability in a dose-dependent manner. MNPs obtained through ultrafiltration, compared to those collected via centrifugation, display a broader size distribution and induce more pronounced toxicity in THP-1 cells, with an EC50 of 243 mg/L. Preliminary comparative analysis indicates that PLA/PBAT-derived MNPs present toxicity risks comparable to, or greater than, those of conventional plastic MNPs. These findings underscore the potential hazards associated with biodegradable plastics.
研究领域:
环境科学
·
材料科学
·
毒理学
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产品关联
DOI
PubMed
高影响因子
POWDER TECHNOLOGY
·
2025
·
IF 4.6
Wanjun Li,Dongming Zou,Binling Chen,Yuan Wang
The application of selective laser sintering (SLS) across various industries is limited by the narrow range of available polymers. It is essential to develop new materials for SLS using sustainable methods. In this study, poly(lactic acid)/poly(butylene adipate- co -terephthalate) (PLA/PBAT) composite powders with great flowability were prepared in different ratios using thermally induced phase separation (TIPS). The particle size, morphology, and wide sintering window of the PLA/PBAT composite powders demonstrated their suitability for SLS. Optimized process parameters enabled the successful manufacturing of various specimens via SLS. Tensile tests revealed that the addition of PBAT improved the mechanical properties of the composite, with 3.5 wt% PBAT yielding the best results. PLA/PBAT composite powders produced via this environmentally friendly method were shown to be viable for use in SLS.
研究领域:
材料科学
·
增材制造
·
聚合物工程
·
可持续性科学
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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.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2024
·
IF 4.7
Zhou Yiyang,Meng Qiuyue,Wang Chenxi,Ma Chenyu,Chen Ming,Xu Xinwen,Ding Yunsheng
The lysine p-toluenesulfonic acid ionic liquid ([Lys][p-TSA]), one kinds of amino acid ionic liquids, was synthesized by one-step method, which was employed to control the interfacial structure and degradation behavior of poly(lactide)/poly(butylene adipate- co -terephthalate) (PLA/PBAT) blends. The [Lys][p-TSA] was incorporated into PLA/PBAT blends with different contents by melt blending, and the effect of [Lys][P-TSA] on the interfacial structure, thermal stability, crystallization behavior, rheological behavior and degradation behavior of PLA/PBAT blends were investigated. The SEM results demonstrate that [Lys][p-TSA] could enhance the compatibility between PLA and PBAT in the PLA/PBAT blends. Thermal gravimetric results showed that the incorporation of [Lys][p-TSA] into PLA/PBAT blends could not affect their thermal stability. Differential scanning calorimetry (DSC) measurements showed that [Lys][p-TSA] can improve the crystallinity of PLA, and the rheological behavior of the blends indicated that [Lys][p-TSA] can enhance the chain mobility of PLA and PBAT. More importantly, the degradation behavior of the blends revealed that [Lys][p-TSA] could affect the distribution of lipase in PLA/PBAT blends, so that the relative degradation rate of each component of the blends was well-controlled. As the [Lys][p-TSA] content increased, the degradation rate of the PLA/PBAT blend in phosphate buffered saline (PBS) solution, artificial seawater, porcine pancreas lipase (PPL) solution and Candida antarctica lipase B (CALB) solution was enhanced. When the contents of [Lys][p-TSA] was 4 phr in the PLA/PBAT blend, the weight loss of the blend in PPL enzyme solution reached to 31.59% after 49 days, which was 3.79 times higher than that of PLA/PBAT blend without [Lys][p-TSA]. The enzymatic degradation mechanism of the blends was studied by density functional theory (DFT) and 1 H nuclear magnetic resonance (NMR), and it was found that [Lys][p-TSA] could control the distribution of lipase in the blends, which accelerated the enzymatic degradation of the PLA/PBAT blend. This study could provide some new way on enhancing the properties of PLA/PBAT blends while reducing the harm of microplastics.
研究领域:
材料科学
·
高分子科学
·
环境科学
·
生物降解
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Bingrui Yang,Tengfei Fan,Yixuan Mao,Jixi Chen,Botuo Zheng,Yu Sheng,Huagui Zhang
To address the increasing global plastic pollution while the reducing oil supply, the biodegradable and bio-derived poly(lactic acid) (PLA) has been developed and considered to be the most promising substitute of petroleum-based plastics. However, the severe brittleness of PLA has become the obstacle of its broad application. Blending modification with poly(butylene-adipate-co-terephthalate) (PBAT) has been proved to be an potentially feasible strategy to toughen PLA, but conflicted by the poor compatibility between PLA and PBAT. To tackle the problem, a comb-type clay-based Janus nanosheet of poly(methyl methacrylate- kaolinite- poly(butylene-adipate-co-terephthalate) (PMMA-Kaol-PBAT) was prepared by selectively grafting PMMA and PBAT separately on either sides of kaolinite Janus nanosheets (JNS). PBAT was functionalized with quaternary amine via aminolysis before being cation-exchanged onto the siloxane tetrahedral surface (STS) side of kaolinite nanosheets, while PMMA chains were grafted onto the aluminoxyl octahedral surface (AOS) side after a beforehand surface modification with the silane coupling agent KH-570. Introduced in the PLA/PBAT blend system, the PMMA-Kaol-PBAT was found to enrich at the interface, enhancing the phase compatibility with the phase separation and aggregation inhibited during the film coating and annealing process.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2020
·
IF 5.289
Dongsheng Yan,Ziyu Wang,Ziyi Guo,Yongming Ma,Chengyu Wang,Haiyan Tan,Yanhua Zhang
Poly(lactic acid) (PLA) and poly(butylene adipate-Co-terephthalate) (PBAT) show high and excellent biocompatibility, which are promising materials used in bone tissue engineering field. In this research, n-HA/PLA/PBAT/MCC composites were prepared by solution blending method. Nano hydroxyapatite (n-HA) was used as nucleation, and microcrystalline cellulose (MCC) was added to improve the degradation performance of the materials. Compared with the composite without n-HA, the crystallinity of the composites with 6% n-HA was increased by 62%. The scanning electron microscopy (SEM) and the transmission electron microscopy (TEM) showed that the n-HA was evenly dispersed in the composites when the addition ration of n-HA was lower than 6%, while obvious agglomeration of n-HA appeared at the addition ratio of 10%. The tensile test demonstrated that the tensile strength of the composites with different addition ratio transcended the needs of bone tissue engineering materials. The introduction of n-HA in obtained composites simulated the composition and structure of native bone, which suggested a potential utility and application prospect in bone tissue engineering.
研究领域:
材料科学
·
生物医学工程
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产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2025
·Vol. 47
·期 1
·803-820
·
IF 4.7
Chunxiu Liu,Chunhui Zhang,Jianhong Liu,Chengxue Li,Huikai Nan,Ziyue Zhang,Yubing Dong
To improve the mechanical property of poly (butylene adipate-co-terephthalate) (PBAT), the bamboo powder/polylactic acid (PLA)/PBAT (BPP) composites were prepared by melt-blending, and the NaOH solutions treated bamboo fiber (BF)/BPP composites were prepared by a hot-pressing molding approach. The effects of BF on the structure and properties of the BF/BPP composites were studied. The results showed that the BF mat significantly improved the mechanical properties of the composites, especially those reinforced with a double-outer-layer BF mat. The tensile strength and Young's modulus of the 4 wt% NaOH solution pretreated-BF reinforced BPP composites were 19.0 and 257.9 MPa, respectively. In addition, the BF/BPP composites had good shape memory properties, with shape memory fixity ratio ( R f ) and shape memory recovery ratio ( R r ) reaching 97.8% and 82.2% under 120°C, respectively. The R r of the composites gradually increased with the concentration of NaOH solutions. This study may provide a feasible reference for the research and application of the PBAT-based biodegradable composites modified with natural reinforcing materials.
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DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Li Wang,Jingge Xu,Mengmeng Zhang,Hui Zheng,Li Li
This study aimed to reveal the quality changes of soy protein-based meat analogues at 4 °C, and to investigate the efficacy of antimicrobial packaging on maintaining the qualities of meat analogues during 10 days of storage. Cinnamaldehyde (CI) or tea polyphenols (TP) were incorporated in polylactic acid (PLA), polybutylene adipate (PBAT) and starch blends by extrusion technique to prepare antimicrobial packaging. The changes of meat analogues were characterized for morphology, water distribution, texture properties and microbiological analysis during 10 days of storage. Cinnamaldehyde loaded PLA/PBAT film effective retarded the growth of Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) at 4 °C, giving an average reduction of E. coli and S. aureus of 3.6 and 4.1 log CFU/g on day 10, respectively. Results suggest that PLA/PBAT-CI film successfully prevents moisture from evaporation, maintains the texture properties and ensures the quality and safety of meat analogues.
研究领域:
食品科学
·
包装技术
·
微生物学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
POLYMER
·
2024
·
IF 4.1
Wentao Liu,Yingjian Wang,Sheng Xiang,Hao Liu
Polylactic acid (PLA)/polybutylene adipate terephthalate (PBAT) blend is a fully degradable polymer blend with balanced strength and toughness. However, the performance of PLA/PBAT blends deteriorates significantly after undergoing physical aging. In this work, dicumyl peroxide (DCP) and methyl methacrylate-glycidyl methacrylate copolymer (P(MMA-co-GMA)) were used respectively for reactive compatibilization by dynamic vulcanization. The effects of dynamic vulcanization on the interfacial compatibility and thus on the mechanical properties of PLA/PBAT blends were evaluated using nanomechanical mapping. Results show that the degree of interfacial compatibilization can be determined by the interface length of microscopic Young's moduli distribution between PLA and PBAT. A longer interfacial length indicates an enhanced interfacial interaction between the components in the blend, which leads to improved macroscopic mechanical properties. Moreover, the improvement of interfacial compatibility allows the PLA/PBAT blends to maintain higher mechanical properties after physical aging, which provides an experimental basis for the design of PLA-based blends with both high mechanical properties and resistance to physical aging.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Xinlong Liu,Xujie Wang,Zifan Xu,Xin Zhang,Guohua Sun,Lianlong Hou,Tiantian Li,Pengpeng Li
Membrane-based oil–water separation has attracted extensive attention as an efficient and energy-saving strategy for oily wastewater treatment; however, most conventional separation membranes are fabricated from petroleum-based polymers, which are difficult to degrade after disposal and may cause secondary environmental pollution. Therefore, developing high-performance oil–water separation membranes with environmental sustainability remains a critical challenge. In this work, a biodegradable PLA/PBAT Janus nanofibrous membrane is fabricated via dual-channel side-by-side electrospinning using polylactic acid (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) as the polymer matrix. Hydrophilic and underwater oleophobic modification of the membrane is achieved through a mild interfacial microswelling process, which introduces hydrophilic functional groups and enhances surface roughness. As a result, the modified membrane exhibits significantly improved wettability, with the water contact angle reduced to approximately 20° and the underwater–oil contact angle exceeding 130°. Benefiting from the aligned nanofiber arrangement, interconnected porous structure, and the stretchability of PBAT, the hydrophilic PLA/PBAT Janus membrane demonstrates excellent separation performance toward oil-in-water emulsions under gravity-driven conditions, achieving a high permeation flux of up to 2985 L·m–2·h–1 under tensile deformation and maintaining a stable flux of approximately 1000 L·m–2·h–1 after 120 separation cycles, while oil rejection efficiencies remain around 98% for different oil phases. This study demonstrates that biodegradable Janus nanofibrous membranes based on PLA and PBAT can simultaneously achieve high separation efficiency, mechanical robustness, and environmental sustainability, providing a promising green membrane material for efficient oil–water separation applications.
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DOI
高影响因子
POLYMER SCIENCE SERIES A
·
2019
·Vol. 61
·期 3
·317-324
·
IF 0.984
Ting Gu,Zhu Dayong,Lu Yue,Lu Shengjun
Abstract Polylactic acid (PLA) and poly(butylene adipate- co -terephthalate) (PBAT) were blended in a twin-screw extruder with a compatibilizer of PLA grafted using glycidyl methacrylate (PLA- g -GMA), providing PLA- g -GMA/PLA/PBAT composites. The chemical structures of the composites were determined using Fourier-transform infrared spectroscopy (FTIR). The effects of the PLA- g -GMA amount on the thermal properties, rheological performance, and mechanical behavior of the composites were studied through differential scanning calorimetry (DSC) using an advanced rheometer and material testing machine. The results revealed that the reaction between the PLA/PBAT and epoxy groups within the PLA- g -GMA promotes an entanglement between molecular chains, which increases the glass transition temperature T g , cold crystallization temperature T c , and melting temperature T m of the samples. Moreover, the PLA- g -GMA/PLA/PBAT composites show higher tensile and notch impact strengths than PLA/PBAT.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）