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林产化学与工业 ›› 2019, Vol. 39 ›› Issue (6): 75-80.doi: 10.3969/j.issn.0253-2417.2019.06.010

• 研究报告 • 上一篇    下一篇

甲基丙烯酸化木质素磺酸钙/聚丙烯酰胺复合水凝胶的制备与性能研究

卢传巍1,2,郭晓亮1,2,蔡青云2,王春鹏1,2,储富祥1,2,王基夫1,2,*()   

  1. 1. 中国林业科学研究院 林产化学工业研究所; 生物质化学利用国家工程实验室; 国家林业和草原局  林产化学工程重点实验室; 江苏省生物质能源与材料重点实验室, 江苏 南京 210042
    2. 南京林业大学 江苏省林业资源高效加工利用协同创新中心, 江苏 南京 210037
  • 收稿日期:2019-06-18 出版日期:2019-12-28 发布日期:2019-12-21
  • 通讯作者: 王基夫 E-mail:wjf118@126.com
  • 作者简介:卢传巍(1992—  ),男,山东德州人,硕士生,主要从事生物质材料功能化研究工作
  • 基金资助:
    国家重点研发计划资助项目(2017YFE0106800)

Preparation and Characterization of Methacrylated Lignosulfonate (MLS)/Polyacrylamide (PAM) Composite Hydrogels

Chuanwei LU1,2,Xiaoliang GUO1,2,Qingyun CAI2,Chunpeng WANG1,2,Fuxiang CHU1,2,Jifu WANG1,2,*()   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China
    2. Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
  • Received:2019-06-18 Online:2019-12-28 Published:2019-12-21
  • Contact: Jifu WANG E-mail:wjf118@126.com
  • Supported by:
    国家重点研发计划资助项目(2017YFE0106800)

摘要:

以木质素磺酸钙(CLS)为原料,通过化学改性制备了甲基丙烯酸化木质素磺酸钙(MLS),然后以MLS为交联剂与丙烯酰胺(AM)、聚乙二醇6000通过一步自由基聚合反应制备了具有半互穿网络结构的MLS/PAM复合水凝胶。通过红外光谱表征了其结构,并分析了其机械性能、吸水性能及吸附性能。研究结果表明:在该MLS/PAM复合水凝胶中MLS作为化学交联剂与丙烯酰胺通过自由基聚合形成化学交联网络,聚乙二醇6000作为线性聚合物穿插于化学交联网络中形成半互穿网络结构。性能分析发现:MLS/PAM半互穿网络复合水凝胶具有优异的压缩性能和吸水溶胀性能,且随着MLS用量由5%增加到15%,复合水凝胶在压缩应变为87.5%时的压缩应力由2.39 MPa增加到3.74 MPa,含凝胶量从37.06%增加到40.81%,平衡溶胀率从23.1 g/g降低至17.9 g/g。此外,MLS/PAM半互穿网络复合水凝胶对有机染料亚甲蓝的吸附能力随着MLS用量的增加而增加。

关键词: 木质素磺酸钙, 丙烯酰胺, 半互穿网络, 水凝胶

Abstract:

A kind of methacrylated lignosulfonate (MLS) was synthesized by chemical modification of calcium lignosulfonate (CLS).And then a class of MLS/polyacrylamide(PAM) composite hydrogels with semi-interpenetrating network structure were prepared via one-step polymerization of polyethylene glycol 6000 (PEG6000), methacrylated lignosulfonate (MLS)used as crosslinker, and acrylamide (AM). The structure was characterized by FT-IR, and the mechanical property, water absorption property and adsorption properties of MLS/PAM composite hydrogels were also investigated. The results indicated that the chemical crosslinking network was formed using MLS as a crosslinker that reacted with AM in the MLS/PAM composite hydrogel. And semi-interpenetrating network structure was formed using PEG6000 as linear copolymer that interspersed in the crosslink network. The property study showed that the MLS/PAM composite hydrogels have excellent compression performance. When the MLS content was increased from 5% to 15%, the compression stress was turned to 87.5%, while the compressive strain was increased from 2.39 MPa to 3.74 MPa and the equilibrium swelling rate was decreased from 23.1 g/g to 17.9 g/g. Meanwhile, the MLS/PAM composite hydrogel also exhibited the excellent swelling property, and the swelling capacity decreased with the increase of MLS content. In addition, the adsorption performance study showed that the organic dye adsorption capacity of the MLS/PAM composite hydrogel was also increased with the increasing of MLS content.

Key words: CLS, acrylamide, semi-interpenetrating network, hydrogel

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