CAJ | 학술논문

通过化学反应将抗菌剂聚六亚甲基盐酸胍( PHMG)键合到聚对苯二甲酸乙二醇酯( PET)基体上,制得抗菌剂质量分数为15%的PET抗菌母料( PET-g-PHMG), PHMG与PET的键合效率达93.7%.透射电子显微镜( TEM)结果表明,化学键的键合作用提高了PHMG与PET的相容性,使得极性的PHMG以纳米尺寸均匀分布在PET-g-PHMG中.在PET基体中添加少量PET-g-PHMG,可制成不同抗菌剂含量的PET样品,抗菌母料PET-g-PHMG的添加可抑制PET基体的降解,提高抗菌PET样品的特性黏度.所得抗菌PET样品对大肠杆菌和金黄色葡萄球菌的抑菌率均在99%以上,即使反复水洗,抗菌性能也无明显降低.该抗菌PET样品具有良好的可纺性,通过熔融纺丝可以制成抗菌PET纤维,其抗菌性能具有耐水洗性,抗菌动力学测试结果表明,该抗菌PET样品对革兰氏阴性和阳性细菌还具有较快速的杀灭作用.
통과화학반응장항균제취륙아갑기염산고( PHMG)건합도취대분이갑산을이순지( PET)기체상,제득항균제질량분수위15%적PET항균모료( PET-g-PHMG), PHMG여PET적건합효솔체93.7%.투사전자현미경( TEM)결과표명,화학건적건합작용제고료PHMG여PET적상용성,사득겁성적PHMG이납미척촌균균분포재PET-g-PHMG중.재PET기체중첨가소량PET-g-PHMG,가제성불동항균제함량적PET양품,항균모료PET-g-PHMG적첨가가억제PET기체적강해,제고항균PET양품적특성점도.소득항균PET양품대대장간균화금황색포도구균적억균솔균재99%이상,즉사반복수세,항균성능야무명현강저.해항균PET양품구유량호적가방성,통과용융방사가이제성항균PET섬유,기항균성능구유내수세성,항균동역학측시결과표명,해항균PET양품대혁란씨음성화양성세균환구유교쾌속적살멸작용.
Polyhexamethylene guanidine hydrochloride( PHMG) was uesd to produce a long-acting antimicro-bial polyethylene terephthalate( PET) masterbatch( PET-g-PHMG) , which was obtained by covalently bonding 15% PHMG based on total weight onto PET matrix. Attributed to the higher grafting efficiency(93. 7%), the hydrophilic PHGH is uniformly dispersed in PET matrix without any aggregate, which potentially enhances its antimicrobial activity. Several antimicrobial PET samples can be prepared by adding specific amount of PET-g-PHMG into the PET matrix. It was found that the addition of PET-g-PHMG did not cause the degradation of PET matrix, instead, increased the intrinsic viscosity because of the presence of some un-reactive functional groups in the PET-g-PHMG. The antimicrobial PET samples showed quickly and efficiently antimicrobial activity against both Gram-positive and Gram-negative bacteria. Furthermore, the antimicrobial activity of the antimicrobial PET fibers prepared by a spun-bonded method remained even after constant water washing for 10 d, indicating its long-acting antimicrobial ability via a contact activity rather than a release mechanism.