基于阻尼特性的淀粉流变相接枝改性

材料研究学报

2010, Vol. 24

Issue (4): 348-352

研究论文

本期目录 | 过刊浏览

基于阻尼特性的淀粉流变相接枝改性

王建坤, 韩大伟, 吕海荣

天津工业大学纺织学院学院天津 300160

Graft Modification of Starch by Rheological Phase Method Based on Damping Characteristic

WANG Jiankun, HAN Dawei, LV Hairong

School of Textiles, Tianjin Polytechnic University, Tianjin 300160

引用本文:

王建坤韩大伟吕海荣. 基于阻尼特性的淀粉流变相接枝改性[J]. 材料研究学报, 2010, 24(4): 348-352.
, , . Graft Modification of Starch by Rheological Phase Method Based on Damping Characteristic[J]. Chin J Mater Res, 2010, 24(4): 348-352.

全文: PDF(1092 KB)

摘要:

对淀粉进行了流变相接枝改性, 测定织造区域内经纱表面浆膜温度, 分析了PVA共混浆膜及原淀粉共混浆膜的动态力学行为。结果表明: 在经纱表面浆膜的温度28.3--35.1℃范围内PVA共混浆膜的阻尼特性优于原淀粉共混浆膜, 其储能模量(400--450 MPa)和耗能模量(25--30 MPa)均远大于原淀粉共混浆膜的储能模量($<$50 MPa)和耗能模量($<$5 MPa); 经流变相接枝改性后, 接枝淀粉的储能模量和耗能模量分别达到500--520 MPa和35--40 MPa, 分别提高了900\%和600\%。流变相接枝改性改善了原淀粉共混浆膜的阻尼特性, 解决了浆膜脆、硬、落浆落物等问题。

关键词 ：高分子材料 , 纺织浆料 , 流变相接枝 , , 阻尼特性

Abstract：

A non-contacting infrared thermometer was used to measure the temperature at the film surface in waving area for investigating dynamic mechanical properties of starch blend film and improving its performance, such as brittleness, hardness, and size shedding. Dynamic thermomechanical analysis(DMA) was conducted to investigating the dynamic mechanical properties of PVA and starch blend film and the starch was grafted by rheological phase method to improve the damping characteristic. The results showed that the temperature at the blend film surface in waving area ranged from 28.3^oC to 35.1^oC. In this temperature range, the damping characteristic of PVA blend film was much better than that of starch blend film, and the storage modulus (400–450 MPa) and loss modulus (25–30 MPa) of PVA were also higher than those of starch of which the storage modulus was less than 50 MPa and the loss modulus was less than 5 MPa. After grafted by rheological phase method, the storage modulus and loss modulus of graft starch blend film reached up to 500–520 MPa and 35–40 MPa respectively, increased by 900% and 600%. So through graft modification, the damping characteristic of starch blend film can be improved obviously.

Key words： polymer textile sizing starch grafted by rheological phase method damping characteristic

收稿日期: 2009-11-05

ZTFLH:

TS105

基金资助:

天津市科技发展计划04310471资助项目。

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