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| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要：在玻璃表面固定一層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)構(gòu)成光誘導(dǎo)氧化還原引發(fā)體系在玻璃表面光引發(fā)自由基接枝聚合，以達(dá)到玻璃表面改性的目的。在玻璃表面引發(fā)了丙烯酸類、丙烯酰胺類、兩性離子單體的接枝聚合。通過衰減全反射紅外法(ATR-FTIR)、接觸角、原子力顯微鏡(AFM)等表征手段證明玻璃表面成功地接枝上了聚合物。玻璃表面光引發(fā)自由基聚合的過程很迅速，一般5min內(nèi)即可完成。再以DMAAm為模型，詳細(xì)對其進(jìn)行研究。當(dāng)原料配比m(BP):m(DMAAm):m(Acetone)=5:100:1000,反應(yīng)時(shí)間為5min時(shí)，樣品的接枝率和單位面積接枝量分別達(dá)到了3.30‰和0.87mg/cm2，表面形貌也發(fā)生了明顯的變化。在各種接枝用的單體中N,N-二甲基丙烯酰胺(DMAAm)的接枝效果較為明顯。研究引發(fā)劑的用量、單體的濃度、反應(yīng)時(shí)間對其接枝率的影響。通過測試發(fā)現(xiàn)接枝了PDMAAm的玻璃表面與丙烯酸樹脂間的粘結(jié)性能較好。 關(guān)鍵詞：玻璃，紫外光誘導(dǎo)，氧化還原引發(fā)，接枝聚合，表面改性
Abstract：Deal glass with 3-aminopropyltriethoxysilane(KH-550) , the amino from KH-550 and benzophenone (BP) can form photoinduced redox system to initiate grafting from the glass surface, so that can achieve the purpose of glass surface modification. Initiate the radical polymerization of some monomers on glass surface, such as acrylates, acrylic acid amides, and zwitterionic monomers. Attenuated total reflection-Fourier transform infrared spectroscopy, contact angle measurement and atomic force microscope can be used to confirmed formation of the polymer on the glass substrate. Polymerization on the glass surface accomplished in a very short time, 5 minutes enough. Study detail in polymerization of DMAAm. m(BP):m(DMAAm):m(Acetone)=5:100:1000 can be used as suitable amount. The weight gain ratio and specific graft yield were 3.30‰ and 0.87mg/cm2. It can been observed obviously that the microstructure has changed. Poly (N,N-dimethylacrylamide) grafted glass has obvious effect. Study the influence of initiator concentration, monomer concentration, reaction time to the grafting degree. And the test show the good bonding performance between acrylic resin and the glass surface. Key words: glass; UV photoinduced; redox initiate ; graft-from; surface modification
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