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|Title:||Design and synthesis of optically transparent calcium-incorporated polymer complexes||Authors:||Sindhu, S.
|Issue Date:||15-Dec-2004||Citation:||Sindhu, S., Valiyaveettil, S. (2004-12-15). Design and synthesis of optically transparent calcium-incorporated polymer complexes. Journal of Polymer Science, Part B: Polymer Physics 42 (24) : 4459-4465. ScholarBank@NUS Repository. https://doi.org/10.1002/polb.20301||Abstract:||Transparent thin films of calcium-ion-incorporated polymer composites were synthesized with calcium carbonate (CaCO 3) and polymers such as poly(acrylic acid) (PAA), poly(ethylene glycol) (PEG), and methylcellulose. The homogeneous distribution of Ca 2+ in the composite films was observed because of the high concentration of COO - groups along the PAA backbone for the complexation of Ca 2+ ions. The optical transparency of the composites depends on the weight percentages of the three polymers and the molar concentration of CaCO 3 in the composites. Maximum transparency was obtained for a composite film with a PAA/CaCO 3 ratio of 9:1. The results indicated that methylcellulose improved the film-forming capabilities and that PEG improved the transparency of the composites. All polymer complexes were characterized with X-ray diffraction, fourier transfer infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, dynamic mechanical analysis, and optical transparency measurements. © 2004 Wiley Periodicals, Inc.||Source Title:||Journal of Polymer Science, Part B: Polymer Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/116283||ISSN:||08876266||DOI:||10.1002/polb.20301|
|Appears in Collections:||Staff Publications|
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