scholarly journals A Calorimetric Study of the Glass Transition Behaviors in Axes of Bean Seeds with Relevance to Storage Stability

1995 ◽  
Vol 109 (4) ◽  
pp. 1471-1481 ◽  
Author(s):  
O. Leprince ◽  
C. Walters-Vertucci
Keyword(s):  
Glass Transition ◽  
Storage Stability ◽  
Calorimetric Study

Calorimetric study of the glass transition occurring in aqueous glucose: Fructose solutions

1993 ◽  
Vol 63 (2) ◽  
pp. 177-188 ◽  
Author(s):  
I. Arvanitoyannis ◽  
J. M. V. Blanshard ◽  
M. J. Izzard ◽  
P. J. Lillford ◽  
S. Ablett
Keyword(s):  
Glass Transition ◽  
Calorimetric Study

Calorimetric study of the glass transition occuring in fructose solutions

1993 ◽  
Vol 246 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Stephen Ablett ◽  
Martin J. Izzard ◽  
Peter J. Lillford ◽  
I. Arvanitoyannis ◽  
John M.V. Blanshard
Keyword(s):  
Glass Transition ◽  
Calorimetric Study

Comb-like copolymers of n-alkyl monoitaconates and styrene

e-Polymers ◽  
2006 ◽  
Vol 6 (1) ◽  
Author(s):  
Helen Inciarte ◽  
Margie Orozco ◽  
Miladys Fuenmayor ◽  
Francisco López-Carrasquero ◽  
Haydee Oliva
Keyword(s):  
Glass Transition ◽  
Free Radical ◽  
Block Copolymers ◽  
Radical Polymerization ◽  
Alkyl Group ◽  
Molar Fraction ◽  
Melting Process ◽  
Side Length ◽  
Random Copolymers ◽  
Calorimetric Study

AbstractRandom and block copolymers containing styrene and mono n-alkyl itaconates with n = 12, 14, 16, 18 and 22 have been prepared by free radical polymerization and nitroxide-mediated radical polymerization. The molar fraction of the mono n-alkyl itaconate in block copolymers increased with increasing size of the alkyl group in the ester substituent. A calorimetric study of all these copolymers was performed. No glass transition (Tg) was observed in the temperature range - 30ºC-120ºC for random copolymers. Melting process attributed to crystalline order in the long side chains was observed for some copolymers depending on their composition and of the monoitaconate chain side length.

Study on the Synthesis and Characters of Waterborne Polyester Resin

2012 ◽  
Vol 430-432 ◽  
pp. 92-96
Author(s):  
Yi Chen ◽  
Guang Sheng Zeng ◽  
Wen Yong Liu ◽  
Yu Gang Huang
Keyword(s):  
Molecular Weight ◽  
Glass Transition ◽  
Storage Stability ◽  
Polyester Resin ◽  
Acid Value ◽  
Blocking Agent ◽  
The Self ◽  
Mass Ratio ◽  
Polyurethane Film ◽  
Mechanical Characters

The waterborne polyester resin was synthesized by esterification between different dibasic acids and diatomic alcohols, while the self-emulsifying groups were introduced to the end of the molecular chain. The influences of the kinds and mass of reactants on the characters of waterborne polyester and polyurethanes film were researched. The results showed that with the increase of blocking agent TMA or HHPA as blocking agent to introduce self-emulsifying group, in waterborne polyester resin, the acid value and molecular weight rise obviously, Mn/Mw rises slightly, the storage stability becomes better, the glass-transition temperature and temperature at the biggest speed of losing weight both become higher. When the mass of TMA and HHPA is 6%wt of whole acids and alcohols, the polyester with appropriate acid value, molecular weight and saving stability could be prepared. The polyurethane film, made by waterborne polyester synthesized through such formula: acids: alcohols = 1, in acids, PA: IPA: AA =1:5:1.5; in alcohols, NPG: BEPG =1/2 (all mass ratio), owns good mechanical characters and stability.

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