XRD, FTIR and 13C CP/MAS NMR Studies of Composite Comprising Poly(vinyl acetate)-Silylated Si-MCM-41
|Periodical||Advanced Materials Research (Volume 364)|
|Edited by||Zainal Arifin Ahmad, Muhd Ambar Yarmo, Fauziah Haji Abdul Aziz, Meor Yusoff Meor Sulaiman, Badrol Ahmad, Khairul Nizar Ismail, Abdul Rashid Jamaludin, Muhd. Azwadi Sulaiman and Mohd Fariz Ab Rahman|
|Citation||Izza Taib Nurul et al., 2011, Advanced Materials Research, 364, 159|
|Online since||October, 2011|
|Authors||Izza Taib Nurul, Endud Salasiah, M. Nasir Katun|
|Keywords||Composite, MCM-41, Poly (Vinyl Acetate), Silylated, Spectroscopy|
A composite structure based on silylated MCM-41 and Poly (vinyl acetate) (PVAc) was synthesized via solution intercalation. Poly (vinyl acetate)-silylated Si-MCM-41 composite were characterized by XRD, FTIR spectroscopy and 13C CP/MAS NMR in order to determine the compatibility between PVAc and the silicate host. XRD study reveals that the framework of silylated Si-MCM-41 was not altered upon incorporation of PVAc. FTIR study showed that characteristic peak assigned to carbonyl group in PVAc was observed around 1741.6 cm-1 for all the composites indicating the presence of PVAc in the silylated Si-MCM-41. 13C CP/MAS NMR showed the increase of line width of the peak assigned to C=O carbonyl group indicating the increase in randomness of polymer chains in confined space. The shifting of the C=O carbonyl groups is a sign of the change in chemical environment of the carbonyl owing to the interaction of PVAc with the silica matrix of silylated Si-MCM-41.