SI-ATRP法制备纳米纤维素增强热塑性弹性体及其性能研究

doi:10.3969/j.issn.0253-2417.2018.01.009

林产化学与工业 ›› 2018, Vol. 38 ›› Issue (1): 59-65.doi: 10.3969/j.issn.0253-2417.2018.01.009

SI-ATRP法制备纳米纤维素增强热塑性弹性体及其性能研究

卢传巍¹, 郭腾飞¹, 王春鹏^1,2, 储富祥^1,2, 王基夫^1,2

1. 中国林业科学研究院林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局林产化学工程重点开放性实验室;江苏省生物质能源与材料重点实验室, 江苏南京 210042;
2. 中国林业科学研究院林业新技术研究所, 北京 100091

收稿日期:2017-07-20 出版日期:2018-02-25 发布日期:2018-02-28
通讯作者: 王基夫,研究员,硕士生导师,研究领域为生物质材料功能化;E-mail:wjf118@126.com。 E-mail:wjf118@126.com
作者简介:卢传巍(1992-),男,山东德州人,硕士生,主要从事生物质材料功能化研究工作
基金资助:
中国林科院中央级公益性科研院所基本科研业务费专项资金资助（CAFYBB2016ZD007）

Synthesis and Characterization of Self-reinforced Cellulose Nanocrystals Based Thermoplastic Elastomers by SI-ATRP

LU Chuanwei¹, GUO Tengfei¹, WANG Chunpeng^1,2, CHU Fuxiang^1,2, WANG Jifu^1,2

1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China

Received:2017-07-20 Online:2018-02-25 Published:2018-02-28

摘要/Abstract

摘要： 以脱脂棉为原料制备纳米纤维素（CNCs），并通过表面引发原子转移自由基聚合法（SI-ATRP），在牺牲引发剂2-溴代异丁酸乙酯（EBiBr）存在的条件下，将甲基丙烯酸月桂酯（LMA）和甲基丙烯酸四氢糠基酯（THFMA）接枝到CNCs的表面，制备了CNCs增强的复合热塑性弹性体材料（CTPEs），并通过FT-IR、¹H NMR和GPC证明成功制备了CTPEs。采用DSC和拉伸试验机对CTPEs的热力学性能和机械性能进行分析，DSC测试表明：随着THFMA含量的增加，CTPEs的玻璃化温度（T_g）由-0.04℃逐渐增加到22.58℃，CTPEs的拉伸强度由0.14 MPa增加到6.17 MPa。此外，通过比较具有相同THFMA/LMA单体投料比的CTPE-3与线性共聚物P（LMA-co-THFMA）的机械性能发现：CTPEs的拉伸强度较P（LMA-co-THFMA）提高了3倍，表明接枝后的CNCs可以实现CTPEs力学性能的增强。

关键词: 表面引发原子转移自由基聚合法, 纳米纤维素, 热塑性弹性体

Abstract: Degreasing cotton was used to prepare an initiator for surface-initiated atom transfer radical polymerization (SI-ATRP).Subsequently,SI-ATRP of tetrahydrofurfuryl methacrylate (THFMA) and lauryl methacrylate (LMA) was carried out in the presence of sacrificial initiator (EBiBr) to prepared self-reinforced CNCs based thermoplastic elastomers (CTPEs).FT-IR,¹H NMR and GPC were applied to characterize the structure of CTPEs.DSC analysis showed that the glass transition temperature (T_g) of CTPEs was increased from-0.04℃ to 22.58℃ with the increasing of THFMA content.Mechanical properties test showed that the tensile strength was increased from 0.14 MPa to 6.17 MPa with the increasing of THFMA content in the feeding.And compared to the linear copolymer P (LMA-co-THFMA) which has the same THFMA/LMA composition,the tensile strength of CTPEs was increased by 3 times,which indicated that CNCs could greatly improve the mechanical properties of CTPEs.

Key words: SI-ATRP, cellulose nanocrystals (CNCs), thermoplastic elastomer

中图分类号:

TQ35

卢传巍, 郭腾飞, 王春鹏, 储富祥, 王基夫. SI-ATRP法制备纳米纤维素增强热塑性弹性体及其性能研究[J]. 林产化学与工业, 2018, 38(1): 59-65.

LU Chuanwei, GUO Tengfei, WANG Chunpeng, CHU Fuxiang, WANG Jifu. Synthesis and Characterization of Self-reinforced Cellulose Nanocrystals Based Thermoplastic Elastomers by SI-ATRP[J]. Chemistry and Industry of Forest Products, 2018, 38(1): 59-65.

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SI-ATRP法制备纳米纤维素增强热塑性弹性体及其性能研究

Synthesis and Characterization of Self-reinforced Cellulose Nanocrystals Based Thermoplastic Elastomers by SI-ATRP

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