Aswathy, K V; Dr.Rani,Joseph(Cochin University of Science & Technology, September , 2007)
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Abstract:
Various synthesis routes have been developed in recent years for the
preparation of nanoparticles. One of those methods is polymer induced
crystallization. The first objective of the present work was to prepare nano ZnO
powder by polymer induced crystallization in chitosan solution and to
characterize the material using different techniques like TEM, SEM, XRD,
FTLR, UV spectroscopy, TGA, DSC etc.The second object of the study is to prepare composites using nano ZnO. It
has been undertaken to explore the potential of nano ZnO as reinforcement in
engineering as well as commodity thermoplastics to widen their application
spectra. We selected three engineering thermoplastics like [poly ethylene
terephthalate, polyamide 6, and polycarbonate] and three commodity plastics
like [polypropylene, high density polyethylene, and polystyrene] for the study.
To date one of the few disadvantages associated with nanoparticle incorporation
has concerned toughness and impact performance. Modification of polymers
could reduce impact performance. The present study also focused on whether
nano ZnO can act as a modifier for thennoplastics, without sacrificing their
impact strength.
Description:
Department of Polymer Science and Rubber Technology,
Cochin University of Science and Technology
Latex waste products contain rubber hydrocarbon of very high
quality, which is only lightly cross linked. Selected wastes such as thread waste
and glove waste were modified into processable materials by a novel economic
process and thermoplastic elastomers were prepared by blending these modified
waste materials with high density polyethylene in various proportions. The
mechanical properties as well as the rheological behaviour of these blends were
evaluated and compared with those of the natural rubber-high density
polyethylene blends.