Glycopolymers with three different pendant alkyl chain lengths (0, 4 and 6) of conjugated glucose moieties were prepared by deacetylation of synthesized acetylated polymers and their in vitro responses with osteoblast cell adhesion, viability and proliferation were investigated. The increase in pendant spacer length of glucose moiety of the glycopolymer had enhanced cytocompatibility even at higher glycopolymer concentration.
Aryloxycarbonylphenyl acrylates and methacrylates were prepared by reacting 4-acryloyloxybenzoyl chloride and 4-methacryloyloxybenzoyl chloride with different phenols. They were homopolymerized using benzoyl peroxide as the initiator at 65°C in dimethylformamide. The polymers were characterized by IR and 1 H-NMR spectra and size exclusion chromatography. Differential scanning calorimetry and polarizing optical microscopy studies revealed that the phenyl esters of poly(4-acryloyloxybenzoic acid) and poly(4-methacryloyloxybenzoic acid) did not show any liquid crystalline properties, but, the para-aryl-substituted phenyl esters did exhibit mesophase properties in the temperature range of 98 -265°C depending on the nature of the aryl substituent. Polymethacrylates exhibit higher T g , and lower T m and T i than the polyacrylates having the same pendant mesogen. Thermogravimetric analyses have shown that the initial decomposition temperatures of the polymers are above 230°C.
Asymmetric composite membranes with rectifying properties are developed by grafting pH-stimulus-responsive materials onto the top layer of the composite structure, which is prepared by two novel block copolymers using a phase-separation technique. This engineered asymmetric composite membrane shows potential applications in sensors, filtration, and nanofluidic devices.
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