Esterified cellulose nanocrystals/poly(urea-urethane) self-healing materials based on aromatic disulfide bonds

doi:10.16085/j.issn.1000-6613.2017.04.030

Chemical Industry and Engineering Progress ›› 2017, Vol. 36 ›› Issue (04): 1381-1387.DOI: 10.16085/j.issn.1000-6613.2017.04.030

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Esterified cellulose nanocrystals/poly(urea-urethane) self-healing materials based on aromatic disulfide bonds

TANG Lirong^1,2, WANG Weibin², WANG Qinghua², ZHUANG Senyang², CHENG Cuixia², HUANG Biao²

1 Jinshan College, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China;
2 College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, Fujian, China

Received:2016-09-18 Revised:2016-10-17 Online:2017-04-05 Published:2017-04-05

基于芳香基双硫键的乙酸酯化纳米纤维素/聚(脲-氨酯)自愈合材料

唐丽荣^1,2, 王炜彬², 王清华², 庄森炀², 陈翠霞², 黄彪²

1 福建农林大学金山学院, 福建福州 350002;
2 福建农林大学材料工程学院, 福建福州 350002

通讯作者: 唐丽荣
作者简介:唐丽荣(1984-),女,博士,讲师,主要从事林产化工与植物纤维化学方面的研究。E-mail:tanglr0201@126.com。
基金资助:
福建省科技厅自然科学基金（2016J01088）、福建农林大学“校杰出青年科研人才”培养专项基金（xjq201422）、江苏省生物质绿色燃料与化学品重点实验室开放基金（JSBGFC14016）、及广西林产化学与工程重点实验室开放课题（GXFC15-04）项目。

Abstract

Abstract: In this study,the esterified cellulose nanocrystals/poly(urea-urethane)(E-CNCs/PUs) self-healing materials were prepared using polypropylene glycol 4000(PPG-4000) and isophorone diisocyanate(IPDI) as raw material,bis (4-aminophenyl) sulfide as crosslinking agent,and esterified cellulose nanocrystals as reinforcement. The mechanical properties,thermal properties,surface chemical structures,and self-healing properties were investigated. The results show that E-CNCs/PUs were self-healing effectively at room temperature without any external interventions,which confirms that bis(4-aminophenyl) disulfide can be effectively used as a dynamic cross-linker for the design of self-healing poly(urea-urethane) material. The maximum tensile strength of E-CNCs/PUs could reach 5.71MPa when the additive amount of E-CNCs was 0.1%,which was increased by 43.11% compared with pure poly(urea-urethane). E-CNCs/PUs composite materials present high tensile strength,elasticity,and malleability. The additive of E-CNCs just has a small influence on the thermal properties of E-CNCs/PUs self-healing materials.

Key words: aromatic disulfide bond, esterified cellulose nanocrystals, poly(urea-urethane), self-healing

摘要： 基于芳香基双硫键，以聚丙二醇-4000（PPG-4000）和异佛尔酮二异氰酸酯（IPDI）为原料，双（4-氨基苯基）硫醚为交联剂，乙酸酯化纳米纤维素作为增强相，制备得到乙酸酯化纳米纤维素/聚（脲-氨酯）[esterified cellulose nanocrystals/poly（urea-urethane），E-CNCs/Pus]自愈合复合材料。对其力学性能、热学性能、表面化学结构、自愈合性能进行了表征研究。结果表明，E-CNCs/PUs在室温下不需其他额外条件即可实现自愈合，说明芳香基双硫键可作为动态交联键应用于自愈合聚（脲-氨酯）的设计与构建；E-CNCs添加量为0.1%时，其聚（脲-氨酯）复合材料拉伸强度达到5.71MPa，与纯聚（脲-氨酯）材料相比，增加了43.11%；E-CNCs/PUs复合材料不仅具有较高的拉伸强度，而且保持了良好的弹性和延展性；热学性能分析结果表明，E-CNCs对聚（脲-氨酯）复合材料热稳定性具有较小影响。

关键词: 芳香基双硫键, 乙酸酯化纳米纤维素, 聚(脲-氨酯), 自愈合

CLC Number:

TANG Lirong, WANG Weibin, WANG Qinghua, ZHUANG Senyang, CHENG Cuixia, HUANG Biao. Esterified cellulose nanocrystals/poly(urea-urethane) self-healing materials based on aromatic disulfide bonds[J]. Chemical Industry and Engineering Progress, 2017, 36(04): 1381-1387.

唐丽荣, 王炜彬, 王清华, 庄森炀, 陈翠霞, 黄彪. 基于芳香基双硫键的乙酸酯化纳米纤维素/聚(脲-氨酯)自愈合材料[J]. 化工进展, 2017, 36(04): 1381-1387.

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Esterified cellulose nanocrystals/poly(urea-urethane) self-healing materials based on aromatic disulfide bonds

基于芳香基双硫键的乙酸酯化纳米纤维素/聚(脲-氨酯)自愈合材料

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