Synthesis of Polyurethane-Based Hydrogels from Liquefied Bagasse

被引：2
作者：
Peng, Zhiyuan [1 ]
Chen, Fangeng [1 ]
机构：
[1] S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China
来源：
JOURNAL OF BIOBASED MATERIALS AND BIOENERGY | 2010年 / 4卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Polyurethane; Hydrogel; Bagasse; Liquefaction; Adsorption; URETHANE ACRYLATE HYDROGELS; COMBINED LIQUEFACTION; SWELLING BEHAVIORS; CONTROLLED-RELEASE; WATER SORPTION; WOOD; PH; FOAM; BIOCOMPATIBILITY; SEPARATION;
D O I：
10.1166/jbmb.2010.1099
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Polyurethane-based hydrogels were synthesized by emulsion polymerization of polyurethane ionomers prepared from the liquefied bagasse. The polyurethane ionomer in emulsion was highly microphase-separated owing to the hydrophoblic interaction of the lignin in liquefied bagasse. The data of the swelling ratio showed that the hydrogels were sensitive to pH and ionic strength. The hydrogel swelled at pH 9.0 and deswelled at pH 4.0, reversibly. The results of DSC analysis revealed that the freezing water in the swollen hydrogels were all free water. The adsorption experiment of the hydrogels for Cu(II) ion suggests that the hydrogels can be used as adsorbent for removal of heavy metal ions from aqueous solutions.
引用
收藏
页码：346 / 352
页数：7
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