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Study of modified polypropylene nonwoven cloth. II. Antibacterial activity of modified polypropylene nonwoven cloths
Author(s) -
Tan Shaozao,
Li Guangji,
Shen Jiarui,
Liu Yun,
Zong Minhua
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/1097-4628(20000829)77:9<1869::aid-app2>3.0.co;2-v
Subject(s) - nonwoven fabric , polypropylene , grafting , antibacterial activity , materials science , polymer chemistry , chemistry , composite material , bacteria , fiber , polymer , biology , genetics
Removal of E . coli from water by modified polypropylene (PP) nonwoven cloths which were prepared through radiation‐induced grafting of 4‐vinyl pyridine (4‐VP) onto PP nonwoven cloths and followed by quaterization was carried out by filtration. The results showed that the content and structure of the pyridinium group on PP nonwoven cloths were important factors to affect their antibacterial activity. The antibacterial activity increased with the number of piled sheets of the used nonwoven cloths and decreased with increase of the viable bacterial cell concentrations in the influent and with filtration rates. The activity detection results found that modified PP nonwoven cloths possessed the ability to capture the bacterial cell alive, and no morphological changes of adhered bacterial cells were observed using SEM; thus, the surfaces of the modified PP nonwoven cloths may not be bactericidal, but bacteriostatic. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 1869–1876, 2000