摘要： 为克服小分子光引发剂的固有缺陷,通过2-(2,3-二羟基)丙氧基硫杂蒽酮(HPTX)、二酰氯及N-甲基二乙醇胺(MDEA)进行逐步聚合反应,将硫杂蒽酮结构及共引发剂胺结构都引入到同一个高分子链上,制备了侧链含有硫杂蒽酮,主链含有共引发剂胺的聚酯型高分子光引发剂。傅里叶变换红外光谱(FT-IR)和核磁共振氢谱(1H-NMR)证实了高分子光引发剂的结构。紫外光谱(UV-Vis)证实了高分子的结构对硫杂蒽酮单元的最大紫外吸收几乎没有影响。用光致差示扫描量热仪(photo-DSC)研究聚酯型高分子光引发剂引发聚酯丙烯酸酯树脂(PEA)的光聚合反应,结果表明:高分子光引发剂的主链结构对其引发效率有着显著的影响。
关键词:
高分子光引发剂,
聚酯,
光聚合,
共引发剂
Abstract: In order to overcome the inherent disadvantages of the low-molecular-weight photoinitiators, polyester-type polymere photoinitiators containing side-chain thioxanthone and in-chain coinitiator amine were synthesized through step polymerization of 2 -(2, 3-dihydroxy )propoxy -thioxanthone (HPTX), dichloride and N-methyl diethanolamine(MDEA). The thioxanthone and coinitiator amine structures were successfully introduced into the backbones of polymeric photoinitiators confirmed by FT-IR and 1H-NMR analysis. Uv-vis spectra showed that the macromolecular chain gave no obvious effect on the maximal absorption of thioxanthone moieties. Photopolymerization of polyester acrylate resin(PEA), initiated by polyester-type polymeric thioxanthone photoinitiators, was studied through photo differential scanning calorimetry( photo-DSC ). The results showed that the macromolecular chain had significant impact on efficiency of the photopolymerization.
Key words:
polymeric photoinitiator,
polyester,
photopolymerization,
coinitiator
韦 军, 王宝总, 邱 峻. 含共引发剂胺的聚酯型高分子光引发剂的制备及其性能研究[J]. 涂料工业, 2012, 42(8): 5-9.
Wei Jun, Wang Baozong, Qiu Jun. Preparation and Study on the Properties of Polyester-type Polymeric Photoinitiators Containing Coinitiator Amine[J]. Paint & Coatings Industry, 2012, 42(8): 5-9.