New UV Curable Acrylated Urethane-Oligoesters Derived From Poly(Ethylene Terephthalate) PET Waste

Systematic Reviews in Pharmacy Pub Date : 2021-06-30 DOI:10.21203/rs.3.rs-668530/v1

M. Khedr

{"title":"New UV Curable Acrylated Urethane-Oligoesters Derived From Poly(Ethylene Terephthalate) PET Waste","authors":"M. Khedr","doi":"10.21203/rs.3.rs-668530/v1","DOIUrl":null,"url":null,"abstract":"\n The glycolysis products of polyethylene terephthalate (PET) waste represent a potential source for many value-added products that contain terephthalate repeating units in their backbones. Terephthalate repeating units were not attained directly from terephthalic acid due to its high melting point in addition to its tendency to sublime before it reacts. Glycolysis of PET provides an excellent solution for recycling polymer waste and constitutes a substantial starting material for manufacturing materials with high mechanical stress, such as unsaturated polyesters and polyurethane products. In this study, PET was first depolymerized by glycolysis, and glycolyzed products were then dimerized by reaction with toluene di-isocyanate TDI with half equivalence of their hydroxyl groups for the purpose of inserting urethane blocks into the oligomer structure. The remaining half equivalence of terminal hydroxyl groups was modified into acrylate groups by an acrylation reaction. The acrylated oligo urethane ester products were crosslinked with different co-monomers and tested for UV curability and mechanical properties, and they showed outstanding results.","PeriodicalId":22121,"journal":{"name":"Systematic Reviews in Pharmacy","volume":"1 1","pages":"561-565"},"PeriodicalIF":0.0000,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Systematic Reviews in Pharmacy","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.21203/rs.3.rs-668530/v1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

The glycolysis products of polyethylene terephthalate (PET) waste represent a potential source for many value-added products that contain terephthalate repeating units in their backbones. Terephthalate repeating units were not attained directly from terephthalic acid due to its high melting point in addition to its tendency to sublime before it reacts. Glycolysis of PET provides an excellent solution for recycling polymer waste and constitutes a substantial starting material for manufacturing materials with high mechanical stress, such as unsaturated polyesters and polyurethane products. In this study, PET was first depolymerized by glycolysis, and glycolyzed products were then dimerized by reaction with toluene di-isocyanate TDI with half equivalence of their hydroxyl groups for the purpose of inserting urethane blocks into the oligomer structure. The remaining half equivalence of terminal hydroxyl groups was modified into acrylate groups by an acrylation reaction. The acrylated oligo urethane ester products were crosslinked with different co-monomers and tested for UV curability and mechanical properties, and they showed outstanding results.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

从聚对苯二甲酸乙酯PET废料中提取的新型UV固化丙烯酸氨基低聚酯

聚对苯二甲酸乙二醇酯(PET)废物的糖酵解产物代表了许多在其主干中含有对苯二甲酸重复单元的增值产品的潜在来源。由于对苯二甲酸熔点高，而且在反应前容易升华，所以不能直接从对苯二甲酸中得到对苯二甲酸重复单元。PET的糖酵解为回收聚合物废料提供了一种极好的解决方案，并构成了制造高机械应力材料(如不饱和聚酯和聚氨酯产品)的重要原料。在本研究中，PET首先通过糖醇解聚，然后通过与甲苯二异氰酸酯TDI反应，糖醇解产物的羟基是一半相等的，目的是在低聚物结构中插入聚氨酯嵌段。剩余的半等效末端羟基通过丙烯酸化反应修饰成丙烯酸酯基团。用不同的共聚单体交联制备丙烯酸低聚聚氨酯酯产品，并对其紫外光固化性能和力学性能进行了测试。

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

Systematic Reviews in Pharmacy

自引率

0.00%

发文量