50阳离子度P(DMC-AM)水溶液聚合工艺的初步探索
关键词 甲基丙烯酰氧乙基三甲基氯化铵 丙烯酰胺 水溶液聚合 特征黏度 阳离子度
毕业论文设计说明书中文摘要
毕业设计说明书外文摘要
Title Preliminary study on aqueous solution polymerization process of 50 cationicity P(DMC-AM)
Abstract
The aqueous solution polymerization process of the copolymer of methyl acryloyl oxygen ethyl trimethyl ammonium chloride (DMC) and acrylamide (AM) was studied. Using ammonium persulfate - sodium bisulfite as the composite initiator (APS-RH), the product of 50% cationicity P(DMC-AM) was prepared by the method of aqueous solution polymerization, and the structure and molecular weight of the product were characterized by FT-IR and GPC. The effects of the initiator concentration, monomer concentration, Na4EDTA concentration, polymerization temperature and maturation temperature on the intrinsic viscosity value and conversion rate of product were investigated. The optimal preparation condition was obtained, i.e. the initiator concentration was 0.023%, the monomer concentration was 52.5%, Na4EDTA concentration was 0.015%, the polymerization temperature was 45℃ and the maturation temperature was 57.5℃. The product of 50% cationicity P(DMC-AM) with the highest intrinsic viscosity value of 20.28dL/g and the conversion rate of 90.49% was obtained under this optimal preparation condition. The result had exceeded the highest intrinsic viscosity value reported in the existing literature, had laid a good foundation for the series and industrialization of P(DMC-AM) products.
Keywords Methyl acryloyl oxygen ethyl trimethyl ammonium chloride Acrylamide Aqueous solution polymerization Intrinsic viscosity Cationicity
目 次
1 引言 1
1.1 研究背景 1
1.2 国内外研究现状 1
1.3 存在问题及本文研究内容 3
2 实验原理 4
2.1 DMC和AM共聚反应机理 4
2.2 引发剂引发机理 5
2.3 影响P(DMC-AM)相对分子质量的因素 5
2.3.1 聚合反应速率方程 5
2.3.2 平均聚合度倒数方程 6
2.4 指标测定原理 6
2.4.1 固含量测定的基本操作 6
2.4.2 特征黏度值测定的基本操作 6
2.4.3 单体总转化率的测定 7
3 实验方案设计 9
4 实验部分 10
4.1 实验仪器和药品 10
4.2 实验操作步骤 11
4.2.1 基本操作 11