聚烯烃
聚苯乙烯
材料科学
高分子化学
叠氮化物
聚合物
表面改性
聚乙烯
磺酰
高密度聚乙烯
结晶度
化学工程
有机化学
化学
复合材料
烷基
工程类
图层(电子)
作者
Dong Wook Jung,Chan-Woo Ahn,Hee‐Ju Kim,Ravindra V. Ghorpade,Sung Chul Hong
标识
DOI:10.1016/j.eurpolymj.2021.110863
摘要
Despite a broad range of commercial uses, applications of polyolefins have often been limited because of a lack of functionality and structural diversity, which has sparked the motivation to modify polyolefins, especially postpolymerization modifications (PPMs). The CH insertion capability of nitrene intermediates has been of interest due to its universal applicability to organic macromolecules containing CH bonds. In this study, a sulfonyl azide (SA) end-functionalized polystyrene (SAPS) is prepared as a model compound by synthesizing a SA containing azo-type radical initiator. SAPS is then used to modify commercial grade high-density polyethylene (HDPE) through simple melt process, affording HDPE-graft-polystyrene. The material exhibits homogeneous fractured surface, decreased crystallinity value, increased complex viscosity value, and relatively high Young's modulus value, suggesting the formation of the polymer hybrids. This study demonstrates the capability of SA end-functionalized polymers as a noncatalytic platform for the PPM of polyolefins.
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