Hydroxyl-terminated Polyethylenes Bearing Functional Side Groups:Facile Synthesis and Their Properties

作     者：Wan-Bin Zhang Jie Luo Yan-Meng Wang Xiu-Zhong Zhu Ce Zhang Jing Liu Mei-Le Ni Guang-Hua Zhang Wan-Bin Zhang;Jie Luo;Yan-Meng Wang;Xiu-Zhong Zhu;Ce Zhang;Jing Liu;Mei-Le Ni;Guang-Hua Zhang

作者机构：Shaanxi Collaborative Innovation Center of Industrial Auxiliary Chemistry and TechnologyShaanxi University of Science&TechnologyXi'an 710021China Shaanxi Key Laboratory of Chemical Additives for IndustryCollege of Chemistry and Chemical EngineeringShaanxi University of Science&TechnologyXi'an 710021China School of Light Industry and EngineeringQi Lu University of Technology(Shandong Academy of Sciences)Jinan 250353China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2021年第39卷第8期

页      面：994-1003,I0006页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：the financial support from the National Natural Science Foundation of China(Nos.51803111,31670596 and 11904220) the Natural Science Foundation of Shaanxi province(Nos.2019JQ-786 and 2020GY-232) 

主　　题：Polyethylene Ring-opening metathesis polymerization Thiol-ene reaction Polybutadiene Structure property relationships 

摘      要：A series of hydroxyl-terminated polyethylenes(HTPE)bearing various functional side groups(***,ester and butane groups)were synthesized by the combination of ring opening metathesis polymerization(ROMP)and visible light photocatalytic thiol-ene *** products are named as a,w-dihydroxyl-polyllpropionyloxythio)methinetrimethylene](HTPECarboxy),a,w dihydroxy-poly(methylpropionatethio)methinetrimethylene](HTPEeser)and a,wdihydroxyl-poly[(butylthio)methinetrimethylene](HTPEbutane)*** investigation of ROMP indicated that the molecular weight of resultant hydroxy-terminated polybutadiene(HTPB)can be tailored by varying the feed ratios of monomer to chain transfer agent(CTA).The exploration of the photocatalytic thiol-ene reaction between HTPB precursor and methyl-3-mercaptopropionate revealed that blue light as well as oxygen accelerated the reaction.1H-NMR and 13C-NMR results verified all the double bonds in HTPB can be modified,and the main chain of resultant polymer can be considered as ***,relationship between the structure of side groups and the thermal properties of functional PEs was *** the results suggested that the Tg was in the order of HTPEbuaneHTPEesterHTPEarboxy+.Greater interaction between side groups resulted in higher ***,all the functional PE samples exhibited poor thermostability as compared to ***,the promising applications for functional PEs were ***1 can be utilized as a smart material with pH-responsive properties due to its pH-dependent ionization of carboxyl side *** can be employed as a macro-initiator for building the triblock copolymer due to the presence of active hydroxyl end *** can serve as a plasticizer for PVC which can enhance the ductilityt of PVC without obviously sacrificing strength.