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

doi:10.3969/j.issn.0253-2417.2019.06.010

Abstract

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

CLC Number:

TQ35
TQ326.4

Chuanwei LU,Xiaoliang GUO,Qingyun CAI,Chunpeng WANG,Fuxiang CHU,Jifu WANG. Preparation and Characterization of Methacrylated Lignosulfonate (MLS)/Polyacrylamide (PAM) Composite Hydrogels[J]. Chemistry and Industry of Forest Products, 2019, 39(6): 75-80.

Figures/Tables 8

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References 16

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样品 sample	MLS用量/g dosage of MLS	压缩应力/MPa¹⁾ compressive stress	压缩模量/MPa compressive modulus	凝胶含量/% gel content	平衡溶胀率/(g·g^-1) equilibrium swelling ratio
MLS/PAM-1	0.075	2.39	57.67	37.06	23.1
MLS/PAM-2	0.150	2.90	138.17	39.56	20.7
MLS/PAM-3	0.225	3.74	199.96	40.81	17.9
PAM	0	1.96	98.69	35.88	—

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

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