Preparation of Latex Film with Macropores and Their Applications in Pigment Dyeing  

作　　者：沈一峰 杨雷 叶佳佳 陈丽 

机构地区：[1]Key Laboratory of Advanced Textile Materials and Manufacturing Technology,Ministry of Education,College of Materials and Textiles,Zhejiang Sci-Tech University,Hangzhou 310018,China [2]Engineering Research Center for Eco-Dyeing & Finishing of Textiles,Ministry of Education,College of Materials and Textiles,Zhejiang Sci-Tech University

出　　处：《Journal of Donghua University(English Edition)》2010年第6期846-851,共6页东华大学学报（英文版）

基　　金：Science Foundation of Zhejiang Province,China(No.Y4080375);Program for Changjiang Scholars and Innovative Research Teamin University,China(No.IRT0654)

摘　　要：Aiming at improving the permeability of the pigment dyed fabrics,two kinds of hydrophilic polymers(polyvinyl pyrrolidone(PVP),and polyethylene glycol(PEG)were fed into the styrene-butyl acrylate(St-BuA)copolymer latex binder respectively to prepare films with macropores.The effects of the post-added polymers on the latex film formation process and film structures were studied and the performance of the dyed fabrics was evaluated.It was found that the drying process could still be divided into three stages even after the addition of PVP and PEG.And the water evaporation rate during the first and last stage remained the same as usual.However,after the addition of PVP,the onset of the second stage was delayed to high volume fraction,and PVP formed into spherical dispersion phase with 300 nm in diameter.It provided a great deal of interface between the latex polymer and the PVP phase,which led to an increase in the water evaporation rate during the second stage.A different case was found after the feeding of PEG.Firstly,the first stage ended at low volume fraction and a decreased evaporation rate was observed in the second stage.Secondly,the PEG dispersion appeared as finger-like structure in the transmission electron microscopy(TEM)images with 9μm in length.After rinsing,pores were found only in the films formerly containing PVP or PEG,and the shapes and the sizes were closely correlated with the initial morphologies of the PVP or PEG domains.However,the shade of color,the abrasion fastness,and the permeability of the dyed fabric were independent of the type of the post-added hydrophilic polymer.Aiming at improving the permeability of the pigment dyed fabrics,two kinds of hydrophilic polymers（polyvinyl pyrrolidone（PVP）,and polyethylene glycol（PEG）were fed into the styrene-butyl acrylate（St-BuA）copolymer latex binder respectively to prepare films with macropores.The effects of the post-added polymers on the latex film formation process and film structures were studied and the performance of the dyed fabrics was evaluated.It was found that the drying process could still be divided into three stages even after the addition of PVP and PEG.And the water evaporation rate during the first and last stage remained the same as usual.However,after the addition of PVP,the onset of the second stage was delayed to high volume fraction,and PVP formed into spherical dispersion phase with 300 nm in diameter.It provided a great deal of interface between the latex polymer and the PVP phase,which led to an increase in the water evaporation rate during the second stage.A different case was found after the feeding of PEG.Firstly,the first stage ended at low volume fraction and a decreased evaporation rate was observed in the second stage.Secondly,the PEG dispersion appeared as finger-like structure in the transmission electron microscopy（TEM）images with 9μm in length.After rinsing,pores were found only in the films formerly containing PVP or PEG,and the shapes and the sizes were closely correlated with the initial morphologies of the PVP or PEG domains.However,the shade of color,the abrasion fastness,and the permeability of the dyed fabric were independent of the type of the post-added hydrophilic polymer.

关 键 词：latex film BINDER PERMEABILITY pigment dyeing 

分 类 号：TS197[轻工技术与工程—纺织化学与染整工程]