甲壳质衍生物共混改性水性聚氨酯
Blending modification of water-based polyurethane with chitosan derivatives
袁照森 1任燕 1黄昊 1王高阳 1孔雨涛 1张鑫卿2
作者信息
- 1. 西安工程大学纺织科学与工程学院,陕西西安 710048
- 2. 西安工程大学纺织科学与工程学院,陕西西安 710048;国家先进印染技术创新中心,山东泰安 271000
- 折叠
摘要
采用聚酯218、聚醚310、IPDI、DMBA为主要原料合成水性聚氨酯(WPU),将一系列质量浓度梯度的壳聚糖(CS)或壳寡糖(COS)与WPU乳液共混.结果表明:由于CS相对分子质量过大,即使调整CS溶液、WPU乳液的质量浓度及pH,两者均无法稳定共混.但采用聚合度较低的COS与WPU共混可获得稳定乳液,经探究可知COS溶液的临界质量浓度为0.4 mg/mL,与WPU乳液共混的临界质量比为2∶8.测试结果表明共混改性后混合乳液的粒径、抗菌性、耐水性有所提升,对乳液稳定性及胶膜的热稳定性几乎无影响.
Abstract
Polyester 218,polyether 310,IPDI,DMBA were used as the main raw materials to synthesize water-based polyurethane,and a series of mass concentration gradient chitosan(CS)or chitooligosaccharide(COS)were blended with water-based polyurethane(WPU)emulsion,the experimental results showed that because the relative molecular mass of CS was too large,even if the concentration and pH value of CS solu-tion and WPU emulsion were adjusted,the two cannot be blended stably.However,a stable emulsion could be obtained by blending COS with a lower degree of polymerization and WPU.After investigation,it could be known that the critical mass concentration of COS solution was 0.4 mg/mL,and the critical mass ratio of COS to WPU emulsion was 2∶8.The test results showed that the particle size,antibacterial property and water re-sistance of the mixed emulsion were improved after blending and modification,and it had almost no effect on the stability of the emulsion and the thermal stability of the film.
关键词
壳聚糖/壳寡糖/水性聚氨酯/共混/静电自组装Key words
chitosan/chitooligosaccharide/water-based polyurethane/blending/electrostatic self as-sembly引用本文复制引用
基金项目
陕西省自然科学基础研究计划一般面上项目(2023)(2023-JC-YB-824)
陕西省教育厅重点科学研究计划协同创新中心项目(2022)(22JY022)
国家先进印染技术创新中心科研基金(ZJ2021A11)
出版年
2024
国家科技期刊平台
NSTL
万方数据