CAJ | 학술논문

以二苯甲酮为光敏剂，通过紫外光辐照引发，将N，N－二甲基十四烷基对乙烯基苄基氯化铵（ C9 H9 Cl－14DMA）单体接枝在含有乙烯基的木塑复合材料（ WPC）表面，赋予WPC表面抗菌功能。利用XPS光电子能谱和扫描电子显微镜（SEM）对WPC的表面化学组成和形貌结构进行表征，采用抑菌圈法对大肠杆菌进行抑菌活性研究。探讨了单体质量浓度、光敏剂质量浓度、光照时间对接枝率的影响。结果表明，最优的接枝条件为：光敏剂质量浓度0．150 g/mL、单体质量浓度0．800 g/mL、光照时间3 min，接枝率为62．5μg/mm2，接枝后的WPC表面具有良好的抑菌性能。
이이분갑동위광민제，통과자외광복조인발，장N，N－이갑기십사완기대을희기변기록화안（ C9 H9 Cl－14DMA）단체접지재함유을희기적목소복합재료（ WPC）표면，부여WPC표면항균공능。이용XPS광전자능보화소묘전자현미경（SEM）대WPC적표면화학조성화형모결구진행표정，채용억균권법대대장간균진행억균활성연구。탐토료단체질량농도、광민제질량농도、광조시간대접지솔적영향。결과표명，최우적접지조건위：광민제질량농도0．150 g/mL、단체질량농도0．800 g/mL、광조시간3 min，접지솔위62．5μg/mm2，접지후적WPC표면구유량호적억균성능。
A new kind of materials was prepared through grafting polymerization of C 9H9Cl-14DMA onto the surface of wood-plastic composites initiated by ultraviolet ( UV) with benzophenone as photosensitizer .The surface of WPC materials was decorated to possess antimicrobial function .The XPS and SEM were used to characterize the chemical and morphological changes of wood-plastic composites .The colibacillus were employed to detect the antibacterial activities of these compounds by the inhibition zone method .The factors influencing the grafting-yield were discussed including monomer concentration , the concentration of photosensitizer and irradiation time .The best conditions of grafting effect were with the concentration of photosensitizer 0.150 gm/L , the monomer concentration of 0.800 g/mL, the illumination time of 3 min, and the grafting rate of 62.5μg/mm2 .The obtained materials had good antibacterial effect .