陽(yáng)離子型聚丙烯酰胺的合成及其在紙上的應(yīng)用

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中圖分類號(hào)：TS79 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：1673-3851（2025）07-0443-08

引用格式：，等．陽(yáng)離子型聚丙烯酰胺的合成及其在紙上的應(yīng)用[J]．浙江理工大學(xué)學(xué)報(bào)（自然科學(xué)），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

廢紙漿，也稱再生漿，是由多種不同品種和性質(zhì)的廢紙與紙板加工而成[1]。（剩余10640字）