Prepareation and characterization of N,N-diethlylacrylamide and acrylic acid binary monomers-grafted polypropylene films with temperature- and pH- sensitivities

Guangguo Wu, Yuanpei Li, Enyi Ou, Mei Han, Xiaoxuan Liu

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Binary monomers-grafted films with temperature- and pH-sensitivities were prepared by photo-grafting of N,N-diethyl-acrylamide and acrylic acid onto polypropylene films with benzophenone (BP) as an initiator. At the beginning of the process preparing PNDEA grafted films, the grafting rate of photo-grafting in bulk was higher than that in solution. Increasing the mole ratio of initiator to monomer could increase the grafting yield by photo-grafting in solution. The grafting yield and the grafting rate of PAA can be much higher when PNDEA grafted films were prepared by photo-grafting method in bulk. The existence of PNDEA and PAA binary grafted layer was confirmed by FTIR and ESCA measurements. The acrylamide band I in FTIR spectra of the PNDEA grafted layer shifted as the temperature changed, which revealed the temperature sensitivity of the grafted films. The SEM images of the PNDEA grafted layers prepared by different grafting methods have different surface morphology. The temperature- and pH-sensitivity of the binary monomers-grafted films were also studied by the measurement of water absorbency.

Original languageEnglish (US)
Pages (from-to)1055-1061
Number of pages7
JournalActa Polymerica Sinica
Issue number9
StatePublished - Dec 2006
Externally publishedYes

Keywords

  • Binary monomers-grafted films
  • Photo-grafting
  • Poly(acrylic acid)
  • Poly(N,N-diethylacrylamide)
  • Temperature- and pH-sensitivities

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics

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