Condensed Tannin-Based Polyurethane as Functional Modifier of PLA-Composites

D. E. García, J. P. Salazar, S. Riquelme, Nacarid Delgado, S. Paczkowski
{"title":"Condensed Tannin-Based Polyurethane as Functional Modifier of PLA-Composites","authors":"D. E. García, J. P. Salazar, S. Riquelme, Nacarid Delgado, S. Paczkowski","doi":"10.1080/03602559.2017.1344855","DOIUrl":null,"url":null,"abstract":"ABSTRACT Novel polylactic acid-based composites were prepared for the first time by melt-blending urethanization using bark polyflavonoids, and polymeric methyl diisocyanate. Rheological, morphological, structural, thermal, and mechanical properties were studied. Polymerization between polyflavonoids and isocyanate during the melt-blending was demonstrated by spectroscopy, confocal microscopy, and thermal analysis. Polyflavonoids improved the blend processability and affected the polylactic acid-crystallization, blend-urethanization, and flexural features. Polyphenols act as nucleating agent, and the effect was highly influenced by the polymeric methyl diisocyanate-charge, and the polyflavonoids-content. Low polymeric methyl diisocyanate-loading (10 wt%) degrades the elasticity modulus (E), while the highest polymeric (20 wt%) improved the miscibility between the polylactic acid polymer-matrix and the polyflavonoids. GRAPHICAL ABSTRACT","PeriodicalId":20629,"journal":{"name":"Polymer-Plastics Technology and Engineering","volume":"2 1","pages":"709 - 726"},"PeriodicalIF":0.0000,"publicationDate":"2018-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"13","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer-Plastics Technology and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/03602559.2017.1344855","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Materials Science","Score":null,"Total":0}
引用次数: 13

Abstract

ABSTRACT Novel polylactic acid-based composites were prepared for the first time by melt-blending urethanization using bark polyflavonoids, and polymeric methyl diisocyanate. Rheological, morphological, structural, thermal, and mechanical properties were studied. Polymerization between polyflavonoids and isocyanate during the melt-blending was demonstrated by spectroscopy, confocal microscopy, and thermal analysis. Polyflavonoids improved the blend processability and affected the polylactic acid-crystallization, blend-urethanization, and flexural features. Polyphenols act as nucleating agent, and the effect was highly influenced by the polymeric methyl diisocyanate-charge, and the polyflavonoids-content. Low polymeric methyl diisocyanate-loading (10 wt%) degrades the elasticity modulus (E), while the highest polymeric (20 wt%) improved the miscibility between the polylactic acid polymer-matrix and the polyflavonoids. GRAPHICAL ABSTRACT
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
缩合单宁基聚氨酯作为pla复合材料的功能改性剂
摘要以树皮总黄酮和聚合二异氰酸酯甲酯为原料,采用熔融共混脲烷化法制备了新型聚乳酸基复合材料。对其流变、形态、结构、热学和力学性能进行了研究。通过光谱、共聚焦显微镜和热分析证实了熔合过程中多黄酮和异氰酸酯之间的聚合。聚黄酮类化合物改善了共混物的加工性能,影响了聚乳酸结晶、共混脲化和弯曲性能。多酚类物质作为成核剂,其成核效果受聚合物二异氰酸酯含量和多黄酮含量的影响较大。低聚合物二异氰酸酯负载(10 wt%)降低弹性模量(E),而高聚合物负载(20 wt%)改善了聚乳酸聚合物基质与多黄酮类化合物之间的混溶性。图形抽象
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Polymer-Plastics Technology and Engineering
Polymer-Plastics Technology and Engineering 工程技术-高分子科学
CiteScore
1.71
自引率
0.00%
发文量
0
审稿时长
4 months
期刊最新文献
Fundamentals Index Plastics Technology Recommendations for Writing a Bachelor's/Master's Thesis at the IKT Plastics Materials Engineering
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1