封装薄膜:多组分生物基水性聚氨酯在自然环境中的降解机理研究

IF 5.8 2区 化学 Q1 POLYMER SCIENCE
Mingxuan Yu , Xin Song , Jiaqi Li , Chao Zhou , Li Liu , Guangfeng Wu
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引用次数: 0

摘要

本研究探讨了不同比例的蓖麻油(CO)和聚碳酸酯二元醇(PCDL)混合软段以及 2-[(2-氨基乙基)氨基]乙磺酸钠(AAS-Na)盐的引入对可生物降解水性聚氨酯(WPU)的影响。首先,通过调整蓖麻油和聚碳酸酯二元醇的比例,制备了具有不同混合软段的各种水性聚氨酯。随后,引入不同量的 AAS-Na 盐,以评估它们对聚合物性能的影响。结果表明,CO 与 PCDL 的比例会显著影响 WPU 的机械性能和生物降解性。随着比例从 10:0 降至 6:4,WPU 薄膜的拉伸强度从 18 兆帕降至 11 兆帕,而断裂伸长率则从 56% 增至 258%。此外,添加 AAS 盐还提高了材料的吸水性和生物降解率。当体系中 CO 与 PCDL 的比例为 10:0,AAS-Na 的摩尔含量为 20 摩尔%时,样品在 48 小时后的最佳吸水率为 132.12%,28 天后的生物降解率为 30.58%。利用傅立叶变换红外光谱对降解机理进行了初步探讨。总之,通过调整蓖麻油、聚碳酸酯二元醇和 AAS 盐的比例,获得了一系列性能优异的可生物降解水性聚氨酯。这项研究证明了以生物基水性聚氨酯为主要成分开发可生物降解包装材料的可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Encapsulation films: Investigation into the degradation mechanism of multicomponent bio-based waterborne polyurethane in natural environments

Encapsulation films: Investigation into the degradation mechanism of multicomponent bio-based waterborne polyurethane in natural environments

In this study, the impact of different ratios of castor oil (CO) and polycarbonate diol (PCDL) mixed soft segments, as well as the introduction of sodium 2-[(2-aminoethyl)amino]ethanesulphonate (AAS-Na) salt, on the biodegradable waterborne polyurethane (WPU) was investigated. Firstly, various waterborne polyurethanes with different mixed soft segments were prepared by adjusting the ratios of castor oil and polycarbonate diol. Subsequently, varying amounts of AAS-Na salt were introduced to assess their influence on the polymer properties. The results indicated that the ratio of CO to PCDL significantly affected the mechanical properties and biodegradability of WPU. As the ratio decreased from 10:0 to 6:4, the tensile strength of WPU films decreased from 18 MPa to 11 MPa, while the elongation at break increased from 56 % to 258 %. Furthermore, the addition of AAS salt improved the water absorption and biodegradation rate of the material. When the ratio of CO to PCDL within the system is 10:0 and the molar content of AAS-Na is 20 mol%, the sample exhibits optimal water absorption of 132.12 % after 48 h and biodegradability of 30.58 % after 28 days. The degradation mechanism was preliminarily explored using Fourier-transform infrared spectroscopy. In conclusion, by adjusting the ratios of castor oil, polycarbonate diol, and AAS salt, a series of biodegradable waterborne polyurethanes with excellent performance were obtained. This study demonstrates the feasibility of developing biodegradable packaging materials using bio-based waterborne polyurethanes as the main component.

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来源期刊
European Polymer Journal
European Polymer Journal 化学-高分子科学
CiteScore
9.90
自引率
10.00%
发文量
691
审稿时长
23 days
期刊介绍: European Polymer Journal is dedicated to publishing work on fundamental and applied polymer chemistry and macromolecular materials. The journal covers all aspects of polymer synthesis, including polymerization mechanisms and chemical functional transformations, with a focus on novel polymers and the relationships between molecular structure and polymer properties. In addition, we welcome submissions on bio-based or renewable polymers, stimuli-responsive systems and polymer bio-hybrids. European Polymer Journal also publishes research on the biomedical application of polymers, including drug delivery and regenerative medicine. The main scope is covered but not limited to the following core research areas: Polymer synthesis and functionalization • Novel synthetic routes for polymerization, functional modification, controlled/living polymerization and precision polymers. Stimuli-responsive polymers • Including shape memory and self-healing polymers. Supramolecular polymers and self-assembly • Molecular recognition and higher order polymer structures. Renewable and sustainable polymers • Bio-based, biodegradable and anti-microbial polymers and polymeric bio-nanocomposites. Polymers at interfaces and surfaces • Chemistry and engineering of surfaces with biological relevance, including patterning, antifouling polymers and polymers for membrane applications. Biomedical applications and nanomedicine • Polymers for regenerative medicine, drug delivery molecular release and gene therapy The scope of European Polymer Journal no longer includes Polymer Physics.
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