阳离子型聚丙烯酰胺的合成及其在纸上的应用

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中图分类号：TS79 文献标志码：A 文章编号：1673-3851（2025）07-0443-08

引用格式：，等．阳离子型聚丙烯酰胺的合成及其在纸上的应用[J]．浙江理工大学学报（自然科学），2025，53（4）：443-450.

Abstract： To solve the problem of poor physical properties of waste pulp-based paper，N，N-Dimethyl acrylamide （DMAA） was used as a branched crosslinking agent，sodium methacryloysulfonate （SMAS） as a chain transfer agent，ammonium persulfate （APS） as an initiator，sodium sulfite as a terminator， methacryloyldimethylamine ethyl ester（DM）as a cationic monomer，and cationic polyacrylamide （CPAM） dispersion was prepared by aqueous solution polymerization. The effects of diffrent amounts of branched crosslinking agents，chain transfer agents， initiators，monomers，and monomer solution pH （20 values on the performance of the CPAM dispersion were analyzed，and the relative molecular weight and viscosity properties of CPAM were optimized. With CPAM as flocculant，the paper was prepared by the paper-making experiment，and the influence of the flocculation of the CPAM dispersion on the physical properties of the paper was analyzed. The results show that when the quality fraction of the branched crosslinking agent， the chain transfer agent， the initiator and monomer was 3.2% ， 0.8% ， 0.47% and 25% ，respectively， the monomer solution pH was 3，and the nitrogen gas flow rate was 60% ，the performance of the CPAM dispersion was best. At the same time，the dispersion was applied to the paper making of waste paper pulp. When the mass fraction of the CPAM dispersion was 0.6% ，the bursting strength of the paper reached 2.14kPa∙m2/g ，the internal bonding strength was 160.5J/m2 ，which were respectively raised by 30.5% and 59.5% compared with the blank sample. The CPAM dispersion prepared herein has great application potential in the paper-making industry，and also provides theoretical reference for the performance study of CPAM for waste pulp paper.

Key words： cationic polyacrylamide； aqueous solution polymerization； molecular weight； viscosity;paper strength

0 引言

废纸浆，也称再生浆，是由多种不同品种和性质的废纸与纸板加工而成[1]。（剩余10640字）