毕业论文-玻璃表面紫外光引发水溶性单体的自由基接枝聚合.doc

摘  要：在玻璃表面固定一层γ-基丙基三乙氧基硅烷(KH-550)，利用KH-550上的胺和二苯甲酮(BP)类衍生物2-羟基-3-（4-苯甲酰基苯氧基）-N，N，N-三甲基-1-丙胺(LQBSB)构成光诱导氧化还原引发体系在玻璃表面光引发水溶性单体的自由基接枝聚合，使达到玻璃表面改性的目的。在玻璃表面引发了丙烯酸类、丙烯酰胺类等多种水溶性单体的接枝聚合。通过衰减全反射红外法(ATR-FTIR)、接触角等表征手段证明玻璃表面成功地接枝上了聚合物。玻璃表面光引发水溶性单体的自由基聚合的过程比较迅速，一般6 min内即可完成。以DMAAm为模型，详细对其进行研究。当原料配比m(引发剂):m(DMAAm):m(H2O)=5:100:1000,反应时间为6 min时，样品的接枝率和单位面积接枝量分别达到了2.96 ‰和7.75 mg/cm2，表面也发生了明显的变化。这些单体中以N,N-二甲基丙烯酰胺(DMAAm)的接枝效果较为明显。研究引发剂的用量、反应时间对其接枝率的影响。通过测试发现接枝了PDMAAm的玻璃表面与丙烯酸树脂间的粘结性能较好。

关键词：玻璃，紫外光诱导，氧化还原引发，水溶性单体，接枝聚合，表面改性

UV-induced Radical Graft Polymerization of Water-soluble Monomers from Glass Surface

Abstract: Fixed to the surface of the glass with a layer of γ-propyl triethoxysilane (KH-550) , the amino of the KH-550 and the benzophenone (BP) derivative LQBSB can form photoinduced redox initiate system to photoinduce water-soluble monomer on the glass surface radical polymerization, so as to achieve the purpose of  modification of the glass surface. The polymerization of acrylates, acrylamides and other water-soluble monomer was initiated on the glass surface.The glass surface was characterized by attenuated total reflection Fourier transform infrared spectroscopy (ATR - FTIR) and contact angle tester to prove the polymer was successfully grafted on it. Polymerization on the glass surface accomplished in a shorter time, 6 minutes was enough. To study the DMAAm in detail as a model.When the ratio of raw materials was m(LQBSB):m(DMAAm):m(H2O)=5:100:1000 and reaction time was 6 minutes, the graft ratio and the grafted amount per unit area of the samples reached 2.96 ‰ and 7.75 mg/cm2, the surface has also undergone a significant change. Among these monomers , the graft effect of N, N-dimethylacrylamide (DMAAm) was much more obvious. The effect of the amount of initiator and the reaction time on the grafting rate was researched. And the test showed good adhesion properties between acrylic resin and the glass surface grafted with DMAAm.

Key words: Glass; UV photoinduced; Redox-initiate ;Water-soluble Monomer;Graft-from; Surface Modification

目  录

摘  要 II

目  录 IV

1. 引言 1

1.1. 表面接枝聚合的方法 1

1.2. 表面光接枝聚合方法 1

1.2.1含光敏基聚合物辐照分解法 1

1.2.2 自由基链转移法 2

1.2.3夺氢反应法 2

1.3. 课题研究的意义 3

2. 实验部分 4

2.1  实验试剂及设备 4

2.2  水溶性引发剂的制备 4

2.3  反应溶液的配制 5

2.4  玻璃表面接枝聚合物 6

2.5  表征及测试 6

3. 结果与讨论 8

3.1  水溶性光引发剂的表征 8

3.2  玻璃表面固定有机胺类单分子层 9

3.3  不同单体的接枝聚合 10

3.4  接枝效果的影响因素 14

3.5  表面接枝对粘结性能的影响 15

4  结论 17

参考文献 18

致 谢 19