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首页> 外文期刊>Journal of Polymers and the Environment >Evaluation of Composite Films Containing Poly(vinyl alcohol) and Cotton Gin Trash
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Evaluation of Composite Films Containing Poly(vinyl alcohol) and Cotton Gin Trash

机译：含有聚（乙烯醇）和棉轧辊的复合膜的评价

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摘要

The purpose of this work was to explore the possibility of using cotton gin trash (CGT) as an inexpensive and biodegradable filler for poly(vinyl alcohol) (PVOH). CGT was milled and screened to give fine particles, and the particles less than 150 um in size were used together with three PVOH polymers (with 1-20% vinyl acetate levels) to form composites. Up to 60% by weight of CGT could be incorporated into PVOH to form composite films. Relative to PVOH, these PVOH/CGT films showed reduced tensile strength and elongation at break but enhanced Young's modulus. CGT was chemically modified through acetylation and succinylation; however, no significant improvement in mechanical properties was observed with these modifications, although acetylated CGT did exhibit somewhat improved elongation at break relative to unmodified CGT for the two PVOH polymers with higher vinyl acetate contents. Thus, for PVOH applications that need reduced cost but can tolerate decreased tensile strength and elongation, cotton gin trash can be used as a cost-effective filler.
机译：这项工作的目的是探讨使用棉轧箔（CGT）作为聚（乙烯醇）（PVOH）的廉价和可生物降解的填料的可能性。将CGT研磨并筛选以提供细颗粒，并且尺寸小于150μm的颗粒与三种PVOH聚合物（具有1-20％乙酸乙烯酯水平）形成复合材料。可以将高达60重量％的CGT掺入PVOH中以形成复合膜。相对于PVOH，这些PVOH / CGT薄膜显示出降低的拉伸强度和断裂伸长率，但增强的杨氏模量。 CGT通过乙酰化和琥珀酰化化学改性;然而，没有通过这些修饰观察到机械性能的显着改善，尽管乙酰化CGT在具有较高乙酸乙烯酯内容物的两个PVOH聚合物的断裂中表现出稍微改进的伸长率。因此，对于需要降低成本但能够耐受降低的拉伸强度和伸长率降低的PVOH应用，棉杜松垃圾可以用作经济型填料。

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