Glass transition temperature of nylon 6—Inorganic salt mixtures

1979 ◽  
Vol 50 (10) ◽  
pp. 6072-6076 ◽  
Author(s):  
Hyo‐gun Kim ◽  
Paul J. Harget
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Inorganic Salt ◽  
Nylon 6 ◽  
Salt Mixtures

Mechanical properties of nylon 6-clay hybrid

1993 ◽  
Vol 8 (5) ◽  
pp. 1185-1189 ◽  
Author(s):  
Yoshitsugu Kojima ◽  
Arimitsu Usuki ◽  
Masaya Kawasumi ◽  
Akane Okada ◽  
Yoshiaki Fukushima ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Elastic Modulus ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Loss Modulus ◽  
Nylon 6 ◽  
Heat Distortion Temperature ◽  
Molecular Composites ◽  
Silicate Layers

Various nylon 6-clay hybrids, such as molecular composites of nylon 6 and silicate layers of montmorillonite and saponite, NCH's and NCHP's, respectively, have been synthesized. To estimate the mechanical properties of these hybrids, tensile, flexural, impact, and heat distortion tests were carried out. NCH was found superior in strength and modulus and comparable in impact strength to nylon 6. The heat distortion temperature (HDT) of NCH (montmorillonite: 4.7 wt. %) was 152 °C, which was 87 °C higher than that of nylon 6. In NCHP, saponite had a smaller effect on the increase of these mechanical properties. The modulus and HDT of NCH and NCHP increased with an increase in the amount of clay minerals. It was found that these properties were well described by the contribution of the constrained region calculated from the storage and loss modulus at the glass transition temperature. According to the mixing law on elastic modulus, the following expression was obtained between the modulus E at 120 °C and the fraction of the constrained region C, En = Ecn = C, where the values of n and Ec (modulus of the constrained region) were 0.685 and 1.02 GPa, respectively.

Influence of Alkyl Chain Length of Dialkyldimethylammonium Bromide on Disperse Dyeing of Nylon 6 Fibers

1997 ◽  
Vol 67 (9) ◽  
pp. 664-670 ◽  
Author(s):  
Ik-Soo Kim ◽  
Kenji Kono ◽  
Toru Takagishi
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Chain Length ◽  
Alkyl Chain ◽  
Nylon 6 ◽  
Alkyl Chain Length ◽  
Dyeing Properties ◽  
Apparent Solubility ◽  
Dyeing Rate

The effect of the alkyl chain length of dialkyldimethylammonium bromide (dad-mab) on disperse dyeing of nylon 6 fibers is investigated. Both dyeing rate and saturation value of 1,4-diaminoanthraquinone (1,4-daa) improve with decreasing alkyl chain length of dadmab, dadmab does not lower the glass transition temperature Tg of nylon 6. The apparent solubility of 1,4-daa increases with increasing alkyl chain length of dadmab, but the adsorption of dadmab on nylon 6 fibers decreases with its increasing alkyl chain length. It is likely that the interaction of dadmab with nylon 6 or with the dye influences the dyeing properties of the fibers.

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