Relationship of First‐ to Second‐Order Transition Temperatures for Crystalline High Polymers

1954 ◽  
Vol 25 (7) ◽  
pp. 825-829 ◽  
Author(s):  
Raymond F. Boyer
Keyword(s):  
Second Order ◽  
Order Transition ◽  
Transition Temperatures ◽  
Second Order Transition ◽  
Relationship Of ◽  
High Polymers

Refractometric Determination of Second-Order Transition Temperatures in Polymers. IV. Butadiene-Acrylo-Nitrile Copolymers

1949 ◽  
Vol 22 (2) ◽  
pp. 402-404 ◽  
Author(s):  
Richard H. Wiley ◽  
G. M. Brauer
Keyword(s):  
Low Temperature ◽  
Linear Relation ◽  
Second Order ◽  
Order Transition ◽  
Copolymer Composition ◽  
Transition Temperatures ◽  
Second Order Transition ◽  
Refractometric Determination ◽  
Acrylonitrile Copolymers

Abstract A previous study of the low-temperature properties of a series of vulcanized butadiene-acrylonitrile copolymers indicated an approximately linear relation between composition and brittle temperature. This study provides information relating low-temperature properties to copolymer composition for a series of industrially available butadiene-acrylonitrile copolymers of varying acrylonitrile content. The refractometric technique for determining second-order transition temperatures (Tm) as previously described was used to determine Tm.

Refractometric Determination of Second-Order Transition Temperatures in Polymers. V. Determination of the Refractive Indexes of Elastomers at Temperatures from 25 to −120° C

1951 ◽  
Vol 24 (3) ◽  
pp. 585-590
Author(s):  
Richard H. Wiley ◽  
G. M. Brauer ◽  
A. R. Bennett
Keyword(s):  
Natural Rubber ◽  
Second Order ◽  
Order Transition ◽  
Transition Temperatures ◽  
Refractometric Method ◽  
Second Order Transition ◽  
Refractometric Determination ◽  
Transition Points

Abstract In previous papers a refractometric method was described for determining second-order transition temperatures of polymers whose transitions occur between 75 and −60° C. In the present study, an Abbé refractometer was insulated and used to determine the refractive indexes of polymers down to − 120° C and the transition points of natural rubber and a number of synthetic rubbers.

Second order transition temperatures of polyethylenes

1956 ◽  
Vol 21 (97) ◽  
pp. 139-140 ◽  
Author(s):  
Ferdinando Danusso ◽  
Giovanni Moraglio ◽  
Gianpietro Talamini
Keyword(s):  
Second Order ◽  
Order Transition ◽  
Transition Temperatures ◽  
Second Order Transition
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