Premium
Synthesis and photo‐ and biodegradabilities of poly[(hydroxybutyrate‐ co ‐hydroxyvalerate)‐ g ‐phenyl vinyl ketone]
Author(s) -
Park Jin,
Park JongGu,
Choi WonMoon,
Ha ChangSik,
Cho WonJei
Publication year - 1999
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/(sici)1097-4628(19991107)74:6<1432::aid-app16>3.0.co;2-z
Subject(s) - grafting , polymer chemistry , copolymer , nuclear chemistry , aspergillus niger , polymerization , materials science , benzoyl peroxide , ketone , thermal decomposition , chemistry , organic chemistry , polymer , composite material , biochemistry
The graft copolymer, poly[(hydroxybutyrate‐ co ‐hydroxyvalerate)‐ g ‐phenyl vinyl ketone] [P(HBV‐ g ‐PVK)], was synthesized by graft polymerization of phenyl vinyl ketone (PVK) onto poly(3‐hydroxybutyrate‐ co ‐3‐hydroxyvalerate) (PHBV) under nitrogen atmosphere using benzoyl peroxide. The structure of P(HBV‐ g ‐PVK) was identified by Fourier transform IR and 1 H‐NMR spectra. The effects of weight ratio of PVK to PHBV in feed, initiator concentration, reaction time, and reaction temperature on the grafting ratio and grafting efficiency were investigated. The thermal decomposition temperature of P(HBV‐ g ‐PVK) was 272°C. The tensile strengths of P(HBV‐ g ‐PVK) after photo‐ or biodegradation were significantly decreased due to degradation by UV irradiation or Aspergillus niger . The value of color difference (Δ E ) of P(HBV‐ g ‐PVK) was greater than that of PHBV. The film surfaces of P(HBV‐ g ‐PVK) treated with UV irradiation and Aspergillus niger showed many pits as compared with the untreated P(HBV‐ g ‐PVK). It has been found that the photo‐ and biodegradabilities of P(HBV‐ g ‐PVK) was excellent. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1432–1439, 1999