端羧基超支化聚酯高吸收铬鞣助剂研究

doi:10.19677/j.issn.1004-7964.2021.02.007

皮革科学与工程 ›› 2021, Vol. 31 ›› Issue (2): 33-39.doi: 10.19677/j.issn.1004-7964.2021.02.007

端羧基超支化聚酯高吸收铬鞣助剂研究

李晨英¹, 杨佳², 李生良², 刘军², 陈华林^2,*, 丁克毅²

1.西安工程大学教务处,陕西西安 710048;
2.西南民族大学化学与环境学院国家民委化学基础重点实验室,四川成都 610041

收稿日期:2020-08-24 出版日期:2021-04-28 上线日期:2021-03-30
通讯作者: *aofly@163.com
作者简介:李晨英（1988-）,女,博士,工程师,主要从事工作：功能高分子材料研究,高校教学管理,电话：17795758782,E-mail: chenyingzzxy@126.com。
基金资助:
国家自然科学基金（21776231）; 西南民族大学2018年中央高校基本科研业务费专项资金资助项目（2018NZD08）

Study on the Carboxyl Terminated Hyperbranched Polyester as an Auxiliary for High Absorption Chrome

LI Chenying¹, YANG Jia², LI Shengliang², LIU Jun², CHEN Hualin^2,*, DING Keyi²

1. Academic Administration, Xi`an Polytechnic University, Xi'an 710048, China;
2. Key Laboratory of Basic Chemistry of the State Ethnic Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China

Received:2020-08-24 Online:2021-04-28 Published:2021-03-30

摘要/Abstract

摘要： 在铬鞣中使用质均分子量1909,支化度为0.72的水性端羧基超支化聚酯HBP-4作为高吸收铬鞣助剂,探讨其对铬鞣剂耐碱稳定性的影响,考查其添加时间节点、添加量对铬鞣效果的影响,及其在自碱化铬鞣中的应用。结果表明,HBP-4在提碱开始时加入,用量为皮重的1.5%时,铬吸收率比对照组增加22.3%,蓝皮收缩温度提高5 ℃,成革抗张强度最多可提高86.2%。鞣后蓝皮断面扫描电镜照片证实了HBP-4可提高胶原纤维的交联密度。HBP-4用在自碱化铬鞣中也可提高铬吸收率和成革品质。

关键词: 端羧基超支化聚酯, 高吸收铬鞣助剂, 胶原纤维, 铬吸收率

Abstract: A water-soluble carboxyl terminated hyperbranched polyester HBP-4 (M_w = 1909, DB (degree of branching) = 0.72) was used as high absorption chrome tanning auxiliary. Firstly, the effect of HBP-4 on the alkali resistance of chrome tanning agent was determined. Then the optimum application process of HBP-4 was investigated by changing its dosage and adding time. The results showed that when the HBP-4 was added at the beginning of basifying treatment and the dosage of HBP-4 was 1.5% of the leather weight, the chromium absorption rate was increased by 22.3%, the shrinkage temperature of wet-blue leather was increased by 5 ℃, and the tensile strength of leather was increased by 86.2%. The SEM photos for the fracture surface of tanned wet-blue leather confirmed that HBP-4 could increase the crosslinking density of collagen fibers. Moreover, HBP-4 can also improve the chrome absorption, thermal stability and mechanical property of leather in the self-alkalifying chrome tanning.

Key words: carboxyl terminated hyperbranched polyester, high absorption chrome tanning auxiliary, collagen fiber, chromium absorption rate

中图分类号:

O633.14

李晨英, 杨佳, 李生良, 刘军, 陈华林, 丁克毅. 端羧基超支化聚酯高吸收铬鞣助剂研究[J]. 皮革科学与工程, 2021, 31(2): 33-39.

LI Chenying, YANG Jia, LI Shengliang, LIU Jun, CHEN Hualin, DING Keyi. Study on the Carboxyl Terminated Hyperbranched Polyester as an Auxiliary for High Absorption Chrome[J]. Leather Science and Engineering, 2021, 31(2): 33-39.

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端羧基超支化聚酯高吸收铬鞣助剂研究

Study on the Carboxyl Terminated Hyperbranched Polyester as an Auxiliary for High Absorption Chrome

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