Polymers
·
2018
·Vol. 10
·期 1
·90
·
IF 2.935
Zhenhui Bai,Yun Liu,Tingting Su,Zhanyong Wang
Poly(ethylene succinate) (PES), poly(butylene succinate) (PBS), and poly(hexylene succinate) (PHS), were synthesized using succinic acid and different dihydric alcohols as materials. Enzymatic degradability by cutinase of the three kinds of polyesters was studied, as well as their solid-state properties. The biodegradation behavior relied heavily on the distance between ester groups, crystallinity, and the hydrophilicity-hydrophobicity balance of polyester surfaces. The weight loss through degradation of the three kinds of polyesters with different hydroxyl monomers took place in the order PHS > PBS > PES. The degradation behavior of the polyesters before and after degradation was analyzed by scanning electron microscopy, differential scanning calorimetry, powder X-ray diffraction, Fourier transform infrared spectroscopy, gel permeation chromatography, and thermogravimetric analysis. The decrease in relative intensity at 1800–1650 estedpolyesters were degraded simultaneously. The frequencies of the crystalline and amorphous bands were almost identical before and after degradation. Thus, enzymatic degradation did not change the crystalline structure but destroyed it, and the degree of crystallinity markedly decreased. The molecular weight and polydispersity index only changed slightly. The thermal stability of the three kinds of polyesters decreased during enzymatic degradation.Keywords:poly(ethylene succinate);poly(butylene succinate);poly(hexylene succinate);cutinase;biodegradability
研究领域:
材料科学
·
生物化学
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产品关联
DOI
PubMed
高影响因子
MACROMOLECULES
·
2023
·
IF 5.5
Lu-Lu Yang,Xue-Wei Wei,Tianyu Wu,Xiaoyu Meng,Hai-Mu Ye
Isomorphism is a distinctive kind of co-crystallization behavior of random copolymers and provides opportunities to regulate the crystalline structure and performance without the loss of crystallinity. Though the intrinsic structural differentiation would induce variation of accommodation capacity in the co-crystal lattice for different co-monomeric units, subtle manipulation of isomorphism has not been realized yet. In this study, butylene adipate (BA) as the crystallizable unit is incorporated into an isomorphism system model of poly(butylene succinate-ran-butylene fumarate) (PBSF) to form the terpolymers of PBSFA, and the crystallization features are investigated. It is confirmed that part of BA (i.e., ≤20 mol %) does not hinder the isomorphism formation in the terpolymers of PBSFA but influences the accommodation capacities of the isomorphic counterparts of butylene succinate (BS) and butylene fumarate (BF). When BA with 10 mol % is copolymerized, the adoption of BS unit in isomorphism becomes less favorable in comparison to the biopolymers of PBSF, showing an increase of the defect Gibbs free energy for the co-crystal and a decrease of the accommodation ratio of BS. However, with a further lifting of the BA content to 20 mol %, the accommodation preference of BS and BF in the isomorphism lattice reverses, and BS turns into a favorable unit instead of BF. Such a transition of accommodation capacity might be due to the deterioration of intersegmental interaction caused by the third co-crystallizable unit of BA. This work directly reveals the differentiation of co-monomeric units in the isomorphic lattice and sheds light on the manipulation of isomorphism.
研究领域:
聚合物科学
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材料科学
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化学工程
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DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 6
·1315
·
IF 3.2
Miao Chen,Guangxu Zhang,Ruolin Wang
Polybutylene succinate (PBS) is a biodegradable aliphatic polyester with excellent thermal stability, mechanical properties, and processability. The synthesis of PBS typically employs titanium-based catalysts like tetrabutyl titanate (TBT) to accelerate the reaction. However, TBT acts as a homogeneous catalyst and is non-recyclable. This study aims to minimize the cost of recovering liquid TBT catalyst during PBS synthesis by using TBT-loaded activated carbon for direct esterification and optimizing the process conditions. The catalyst was analyzed using inductively coupled plasma emission spectroscopy, automated specific surface area and pore size analysis, X-ray diffraction, and Fourier-transform infrared spectroscopy. The product was evaluated through infrared spectroscopy, nuclear magnetic resonance hydrogen spectra, and gel permeation chromatography. The optimal process parameters were determined to be an esterification temperature of 170 °C, a polycondensation temperature of 235 °C, an acid-to-alcohol molar ratio of 1:1.2, a catalyst amount of 0.06 g, and a dehydration time of 3 h. Under these conditions, the weight-average molecular weight of PBS reached 47,655, reducing the catalyst usage from 0.5% to 0.3%, resulting in a 24.7% increase in catalytic efficiency compared to TBT, significantly lowering costs. After five cycles of reuse, the weight-average molecular weight of the product remained above 35,000. This study demonstrates that TBT-loaded activated carbon exhibits superior catalytic performance, offering a cost-effective and efficient method for industrial PBS production with broad application potential.
研究领域:
材料科学
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催化化学
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产品关联
DOI
PubMed
高影响因子
RESOURCES CONSERVATION AND RECYCLING
·
2024
·
IF 11.2
Wei-Zhen Zheng,Xiao Li,Peng-Yuan Xu,Ze-Yang Zhang,Ping-Li Wang,Bo Lu,Dan Huang,Zhi-Chao Zhen,Jun-Hui Ji,Ge-Xia Wang
The recycling of poly(butylene succinate) (PBS) plastic aligns with the principles of sustainable development and the circular economy. However, existing recycling systems often lack environmental friendliness and involve complex product separation operations. In this study, we developed a new recycling system based on succinic acid, a constituent monomer of PBS, as the catalyst and water as the solvent to hydrolyze PBS into different products, including oligomers, monomers, and tetrahydrofuran. These products (monomers or oligomers) were then repolymerized without requiring any separation steps by adding tetrabutyl titanate as the catalyst and 1,4-butanediol. The resynthesized PBS had similar mechanical and thermal properties to those synthesized from commercial monomers. In addition, the selective hydrolysis of PBS in mixed plastics was achieved by adjusting the reaction conditions. The process demonstrated here could inspire new recycling strategies for plastic wastes.
研究领域:
材料科学
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可持续发展
·
化学工程
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产品关联
DOI
高影响因子
JOURNAL OF POLYMERS AND THE ENVIRONMENT
·
2024
·
IF 4.7
Song Jie,Yu Shuang,Han Jiaxuan,Zhang Rong,Ma Xiaoyan
To improve the performance of biodegradable materials and endow them with antimicrobial properties, herein, pyridine-3,5-dicarboxylic acid was introduced as a third monomer into the molecular chain of polybutylene succinate (PBS) via copolymerization, followed by introduction of pyridine quaternary ammonium into the PBS branched chain through nucleophilic substitution to afford antimicrobial PBS-BD, which was then comingled with polylactic acid (PLA) to prepare PBS-BD/PLA composites. X-ray diffraction analysis revealed that the introduction of pyridine-3,5-dicarboxylic acid caused a small shift in the diffraction peaks of PBS and a decrease in crystallinity, which was further decreased upon blending with PLA. PBS-BD and PLA were bound together by intermolecular forces. When the PBS-BD/PLA ratio was 8:2, the melting points of the two phases were the closest, the compatibility was the best, and the thermal and antimicrobial properties were optimal. The antimicrobial properties of the composites were gradually enhanced with increasing PBS-BD content, reaching optimal values for application as antimicrobial materials. The composites were degraded in soil supernatant for 6 months at a rate of 31.52%. After 42 d of enzymatic degradation, the degradation rate reached 23.24%. The PBS-BD/PLA composites promoted the growth of green vegetables to a certain extent and enhanced their nutritional value, reaching the highest chlorophyll content and vitamin C content after 45 d of growth in the presence of the composites.
研究领域:
材料科学
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生物学
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农业科学
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产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Haoting Yin,Dongyuan Ye,Tianyu Wu,Xiaoyu Meng,Hai-Mu Ye
The sluggish crystallization kinetics of poly(ethylene succinate) (PES), a biodegradable aliphatic polyester with promising mechanical properties, severely restricts its industrial processing and application. To address this limitation, this study introduces two bio-derived hexahydric alcohols, myo -inositol (MIS) and dipentaerythritol (DPE), as nucleating agents to regulate PES crystallization. Non-isothermal and isothermal differential scanning calorimetry, polarized optical microscopy, and wide angle X-ray diffraction analyses reveal that both MIS and DPE significantly enhance nucleation density and crystallization rates via epitaxial templating and hydrogen-bonding interactions. DPE outperforms MIS, achieving 19.1 °C increase in crystallization temperature and 28% improvement in relative crystallinity at 2 wt% loading, attributed to its superior epitaxial surface provision and stronger intermolecular interactions for PES chains. Fourier transform infrared spectroscopy further confirms the plasticizing effect of these agents, which reduces rigid amorphous fractions and enhances chain mobility. The synergistic mechanism combines heterogeneous epitaxial nucleation and chain lubrication, enabling accelerated crystallization kinetics without compromising biodegradability. This work provides a sustainable strategy to optimize PES processing efficiency and performance, advancing its potential as a viable alternative to conventional thermoplastics.
研究领域:
材料科学
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生物化学
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产品关联
DOI
高影响因子
CHEMOSPHERE
·
2019
·
IF 5.108
Xiaoming Zhou,Tonghao Wu
Two novel phosphorus-containing copolyesters were synthesized by direct polycondensation reaction of phenyl dichlorophosphate, 1,4-succinic acid and 1,4-butanediol using stannous chloride (SnCl 2 ) and 4-Methylbenzenesulfonic acid as catalyst, and its chemical structures were identified by 1 H and 31 P nuclear magnetic resonances ( 1 H and 31 P NMR). The resulting phosphorus-containing poly(butylene succinate) (PPBS) was characterized by X-ray diffraction (XRD), polarized optical microscope (POM), thermogravimetry analysis (TGA) and differential scanning calorimetry (DSC). PPBS can be as a flame retardant for commercial poly(butylene succinate) (PBS). A series of flame retardant composite materials were produced by melt-blending of PBS and PPBS. The comprehensive flame retardant property of composite materials was evaluated by limited oxygen index (LOI). While 20 wt % of PPBS was added into PBS resin, good flame retardant properties could be obtained. Composite materials can have much better flame retardancy (LOI = 30) than neat PBS resin. Thermogravimetric analysis (TGA) showed that the weight loss of PBS was decreased by the introduction of PPBS. In addition, possible flame retardancy mechanism of PPBS in composite materials was analyzed by SEM photos of char residue.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2023
·
IF 3.2
Xiaoming Zhou,Junwei Wu,Dongdong Yu
Based on the stress fluctuation during the tensile process of poly(butylene succinate) (PBS), the tensile behavior of biodegradable bicrystalline block copolyesters (PBSEG) synthesized using polycondensation of poly(ethylene glycol) (PEG) and poly(butylene succinate) (PBS) was further studied. The effects of tensile rate and temperature test conditions on the stress–strain behavior of bicrystalline block copolymer PBSEG were investigated by conducting tensile tests. The experimental results showed that when the mass content of polyethylene glycol in PBSEG was 60%, the material did not show obvious periodic stress fluctuation during the “cold drawing” stage of the stress–strain curve, but showed different and more complicated periodic curve changes. The stress fluctuation of PBSEG copolyester had the characteristics of small amplitude and short period. The elongation at break increased obviously, and the maximum elongation at break was more than 2000%. The analysis of morphology and structure showed that the surface morphology of PBSEG dumbbell bars did not show obvious alternating changes in structure, characterized by light and dark. Craze was the main cause of ductile fracture for PBS and PBSEG copolyesters. The tensile fracture of the two materials occurred in the stress fluctuation region. Highlights Small-amplitude and short-period stress fluctuation for PBSEG copolyester. There was no alternating light and dark on the surface of the PBSEG stretched spline. Craze was the main cause of ductile fracture for PBS and PBSEG copolyesters. Tensile fracture of the materials occurred in the stress fluctuation region.
研究领域:
材料科学
·
高分子化学
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产品关联
DOI
高影响因子
Polymer Chemistry
·
2024
·
IF 4.1
Hongji Wang,Xiaojun Ma,Hanyu Yao,Haohao Chang,Yin Lv,Zhong Wei
Maintaining the high mechanical properties of degradable polyesters is crucial for their practical application. In this work, tricyclodecanedimethanol (TCD) with a rigid ring structure was introduced into the synthesis of polybutylene succinate (PBS) to form PBTCDS copolyester. The addition of TCD significantly improved the glass transition temperature (Tg), mechanical properties, and barrier properties of the copolyester. The inherent toughness of PBS is limited by its poor elongation at break, which restricts its application range. However, the tensile strength of PBTCDS5 synthesized in this study is 42 MPa, with an elongation at break of 687%. It is noteworthy that the elongation at break of PBTCDS15 reaches 860%, greatly improving the mechanical properties of PBS. Compared with PBS (Tg −31.4 °C), the Tg of the copolyester increased from −29.2 °C to −22.8 °C, thereby improving its thermal properties. The water vapor barrier test showed that the water vapor transmission rate had improved. In addition, water degradation experiments showed that changing the TCD content resulted in different degradation rates, leading to copolyesters with different degradation rates. Ultimately, this method significantly improves mechanical properties while maintaining degradability, thereby broadening the application scope of PBS.
研究领域:
材料科学
·
环境科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2023
·Vol. 30
·期 2
·1-9
·
IF 2.8
Gan H. N.,Shen Y. D.,Guo H.,Qin Y. X.,Ren L.,Zhang M. Y.,Zhang H. X.
Circumventing intrinsic brittleness, high crystallinity and low melt strength of Poly (butylene succinate) (PBS) without compromising its remarkable biodegradability, biocompatibility and non-toxicity has become of particular challenge in polymer science and technology due to growing demand for eco-friendly sustainable materials in expanded fields of industry. Achievement of the goal without utilizing any high-cost modifier and advanced process method is another crucial perspective for developing feasible substitution for petroleum-based plastic products in industry. Herein, green poly (butylene succinate) composites are fabricated by virtue of the melt blending with γ-Glycidoxypropyltrimethoxysilane (KH560) grafted rice husk (RH), namely RH@KH560, improving the toughness and strength of the result materials. The incorporation of 15% RH@KH560 into the composite promotes a remarkable increase of 223% in modulus of PBS composite. Concurrently, the Izod impact strength of composite increases by 143% compared with pure composite. The decrease in crystallinity of PBS composite is realized from differential scanning calorimetry, with the amount of RH@KH560 up to 30%. Specifically, the crystallinity decreases by 22% from 46.85% to 36.22% for PBS/RH@KH560-30 composite. Furthermore, the gradually diminishing melting enthalpy (ΔHm) results from a decreasing crystallinity upon increase of the RH@KH560 amount, indicating that the incorporation of RH@KH560 into PBS reduces the crystallinity in a significant manner. Overall, we propose a facile strategy of recycling wastes rice husk as high added-value additives.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
POLYMER INTERNATIONAL
·
2013
·Vol. 63
·期 4
·626-632
·
IF 2.125
Weihua Zhou,Jiangman Shi,Shuaishuai Yuan,Yiwang Chen
A series of novel poly[(butylene succinate)- co -diolisobutyl]-[ polyhedral oligomeric silsesquioxane] (PBS-POSS) copolyesters have been synthesized for the first time directly from diacid and diols via melting polycondensation. Both PBS and POSS segments crystallized as revealed by X-ray diffraction, and the crystallization of PBS was found to be retarded by the incorporation of POSS into PBS chains based on differential scanning calorimetry and rheological results. Moreover, the copolyester containing 3 mol% POSS formed organogels in chloroform by the treatment of shear flow and was more thermally stable than the pristine sample, due to formation of a physically crosslinked network caused by the crystallization of POSS into crystals of larger sizes. © 2013 Society of Chemical Industry
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
RSC Advances
·
2018
·Vol. 8
·期 26
·14722-14731
·
IF 2.936
Jiaxiang Qin,Limiao Lin,Shuanjin Wang,Shuxian Ye,Weikeng Luo,Min Xiao,Dongmei Han,Yuezhong Meng
In order to decrease the brittle–toughness transition temperature and increase the mechanical strength of poly(propylene carbonate) (PPC), a series of multiblock copolymers of poly(propylene carbonate)-multiblock-poly(butylene succinate) (PPC-mb-PBS) are designed and synthesized. 1H-NMR, DOSY and GPC results demonstrate the successful synthesis of PPC-mb-PBSs with designed multiblock sequence. The thermal, crystalline and mechanical properties of these PPC-mb-PBSs are evaluated by DSC, TGA, POM, tensile and tearing testing. Experiment results demonstrate that crystallinity, thermal and mechanical properties of PPC-mb-PBSs can be readily modulated by changing the composition and block length of PPC and PBS moieties. It is found that all the prepared PPC-mb-PBSs are semi-crystalline polymers with a melting temperature at 93–109 °C and a Tg at around −40 °C. Both crystallization rate and crystallinity of the multiblock copolymers increase with increasing both PBS content and PBS block length. As a consequent, the tensile strength increases with increasing PBS/PPC block ratios at room and lower temperatures. In conclusion, the amorphous PBS phase in the block copolymers acts as soft segment, endowing PPC-mb-PBS copolymers with much better flexibility than PPC at low temperature of 273 K when PPC segments are frozen.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）