Synthesis and characterization of temperature/pH dual sensitive hemicellulose-based hydrogels from eucalyptus APMP waste liquor

被引：39

作者：

Chen, Ting ^{[1
,5
]}

Liu, Haitang ^{[1
,2
,3
,4
]}

Dong, Cuihua ^{[2
]}

An, Yongzhen ^{[1
]}

Liu, Jing ^{[1
]}

Li, Jie ^{[1
]}

Li, Xuexiu ^{[1
]}

Si, Chuanling ^{[1
]}

Zhang, Meiyun ^{[5
]}

机构：

[1] Tianjin Univ Sci & Technol, China Light Ind Key Lab Papermaking & Biorefinery, Tianjin Key Lab Pulp & Paper, Tianjin 300457, Peoples R China

[2] Qilu Univ Technol, Key Lab Pulp & Paper Sci & Technol Chinese, Minist Educ & Shandong Prov, Jinan 250353, Peoples R China

[3] Jiangsu Key Lab Biomass Energy & Mat, Nanjing 210042, Peoples R China

[4] Tianjin Univ Sci Technol, Tianjin Key Lab Marine Resources & Chem, Tianjin 300457, Peoples R China

[5] Shaanxi Univ Sci & Technol, Coll Bioresources Chem & Mat Engn, Xian 710021, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2020年 / 247卷 / 247期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Hemicellulose; Biorefinery; Acrylamide; Acrylic acid; Swelling ratio; SEMIINTERPENETRATING NETWORK HYDROGELS; SWELLING BEHAVIOR; ALKALINE PEROXIDE; PRE-HYDROLYSIS; ACRYLIC-ACID; PH; XYLAN; COPOLYMERIZATION; SALT;

D O I：

10.1016/j.carbpol.2020.116717

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this investigation, a variety of innovative temperature/pH-sensitive hydrogels consisting of hemicellulose (extracted from APMP waste liquor) and acrylic acid/acrylamide monomers were synthesized via free radical polymerization for water retention agents and controlled release. The results showed that the hydrogel polymer was chemically cross-linked and entangled to form a three-dimensional network structure, and the monomer successfully grafted on the hemicellulose chain. The content of crosslinkers and monomers had obvious effects on the swelling ratio of hydrogel. The sensitivity of the hydrogel was determined according to the change of the swelling ratio of the hydrogel under different temperature and pH conditions, combined with the chemical structure analysis of the hydrogel, and explain its sensitivity mechanism. Finally, after 6 days at 25 degrees C and pH 6, the swelled hydrogel still retained 79.46 % of the moisture, which proved that it has high water retention ability.

引用

页数：9

共 49 条

[31] Modified arabinoxylan-based films.: Part B.: Grafting of omega-3 fatty acids by oxygen plasma and electron beam irradiation [J].