Synthesis and Characterization of α-End Functionalized 3,4-Polyisoprene Using Fe(acac)3/IITP/AliBu3 Catalyst

IF 4 2区化学 Q2 POLYMER SCIENCE

Chinese Journal of Polymer Science Pub Date : 2025-06-20 DOI:10.1007/s10118-025-3339-1

Yu-Fan Sun, Ying-Nan Zhao, Shi-Liang Xu, Yao Yu, Liang Fang, Li-Hua Na, Qi Yang, Feng Wang, Heng Liu, Chun-Yu Zhang, Xue-Quan Zhang

{"title":"Synthesis and Characterization of α-End Functionalized 3,4-Polyisoprene Using Fe(acac)3/IITP/AliBu3 Catalyst","authors":"Yu-Fan Sun, Ying-Nan Zhao, Shi-Liang Xu, Yao Yu, Liang Fang, Li-Hua Na, Qi Yang, Feng Wang, Heng Liu, Chun-Yu Zhang, Xue-Quan Zhang","doi":"10.1007/s10118-025-3339-1","DOIUrl":null,"url":null,"abstract":"<div>The synthesis of functionalized rubber copolymers is a topic of great research interest. In this study, we present a novel approach for the direct construction of α-functionalized 3,4-polyisoprene through polymerization of polar monomers and isoprene monomer. The α-functionalized 3,4-polyisoprene was successfully synthesized via in situ sequential polymerization using the iron-based catalytic system (Fe(acac)3/IITP/AliBu3), exhibiting high activity and resistance to polar monomers without requiring protection of polar groups. The structure of α-functionalized 3,4-polyisoprene was confirmed by proton nuclear magnetic resonance spectroscopy (1H-NMR) and two-dimensional diffusion-ordered spectroscopy (2D DOSY) spectra analysis. The introduction of polar groups, particularly hydroxyl groups, enhanced the hydrophilicity of the copolymer. This was evidenced by a decrease in the water contact angle from 106.9° to 96.4° with increasing hydroxyl content in the copolymer.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"43 8","pages":"1367 - 1374"},"PeriodicalIF":4.0000,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Polymer Science","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10118-025-3339-1","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}

引用次数: 0

Abstract

The synthesis of functionalized rubber copolymers is a topic of great research interest. In this study, we present a novel approach for the direct construction of α-functionalized 3,4-polyisoprene through polymerization of polar monomers and isoprene monomer. The α-functionalized 3,4-polyisoprene was successfully synthesized via in situ sequential polymerization using the iron-based catalytic system (Fe(acac)₃/IITP/AlⁱBu₃), exhibiting high activity and resistance to polar monomers without requiring protection of polar groups. The structure of α-functionalized 3,4-polyisoprene was confirmed by proton nuclear magnetic resonance spectroscopy (¹H-NMR) and two-dimensional diffusion-ordered spectroscopy (2D DOSY) spectra analysis. The introduction of polar groups, particularly hydroxyl groups, enhanced the hydrophilicity of the copolymer. This was evidenced by a decrease in the water contact angle from 106.9° to 96.4° with increasing hydroxyl content in the copolymer.

查看原文本刊更多论文

Fe(acac)3/IITP/AliBu3催化剂合成α-端功能化3,4-聚异戊二烯及其表征

功能化橡胶共聚物的合成是一个备受关注的研究课题。在这项研究中，我们提出了一种通过极性单体和异戊二烯单体的聚合直接构建α-功能化3,4-聚异戊二烯的新方法。采用铁基催化体系（Fe(acac)3/IITP/AliBu3）原位序聚法制备了α-功能化的3,4-聚异戊二烯，该体系具有较高的活性和对极性单体的抗性，无需极性基团的保护。通过质子核磁共振波谱（1H-NMR）和二维扩散有序波谱（2D DOSY）分析证实了α-功能化3,4-聚异戊二烯的结构。引入极性基团，特别是羟基，增强了共聚物的亲水性。随着共聚物中羟基含量的增加，水接触角从106.9°减小到96.4°。

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分钟内获得全文求助全文

来源期刊

Chinese Journal of Polymer Science 化学-高分子科学

CiteScore

7.10

自引率

11.60%

发文量

218

审稿时长

6.0 months

期刊介绍： Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985. CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.