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K. N. Ninan

Researcher at Vikram Sarabhai Space Centre

Publications -  160
Citations -  4478

K. N. Ninan is an academic researcher from Vikram Sarabhai Space Centre. The author has contributed to research in topics: Thermal decomposition & Curing (chemistry). The author has an hindex of 36, co-authored 159 publications receiving 4156 citations.

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Influence of molecular weight on the thermal decomposition of hydroxyl terminated polybutadiene

TL;DR: In this article, the activation energy and pre-exponential factor A using four different non-isothermal integral equations were derived for the first stage as a quadratic curve following the equation: E or ln A = K1 − K2/M (where K1 and K2 are empirical constants whose values are different for the different molecular weight averages, viz. Mn, Mw and Mz and for different equations).
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Phenyl ethynyl functional addition cure phenolic resins: Synthesis, characterisation and thermal properties

TL;DR: Phenyl ethynyl functional addition curable phenolic resins were synthesized by reacting a mixture of phenol and 3-(phenylethynyl) phenol (PEP) with formaldehyde in presence of an acid catalyst as discussed by the authors.
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Effect of reactivity of different types of hydroxyl groups of HTPB on mechanical properties of the cured product

TL;DR: In this article, the amount of three types of hydroxyl functional groups (GOH, HOH, and VOH) remaining in samples acetylated to the same extent under two different conditions, viz., fast acetylation using acetyl chloride in presence of N-methyl imidazole catalyst and slow acetylations by acetic anhydride, differed significantly.
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Atomic oxygen resistant coating from poly(tetramethyldisilylene-co-styrene)

TL;DR: A polydisilahydrocarbon, namely, poly(tetramethyldisilylene-co-styrene), synthesized from dimethyldichlorosilane and styrene in 1 : 0.5 mol ratio under dechlorination conditions was evaluated as an atomic oxygen (AO) resistant coating for polyimide film and C-polyimide composite as discussed by the authors.