ABSTRACT

the relationship between side chain isomerism of aliphatic C4 substituted 1,3,5-benzenetricarboxylamides (BTARs, 1,3,5-benzenetricarboxylic acid tris(tert-butylamide) (BTA-TB), 1,3,5-benzenetricarboxylic acid tris(iso-butylamide) (BTA-IB) and 1,3,5-benzenetricarboxylic acid tris(n-butylamide) (BTA-NB)) and nucleation effects in iPP were investigated by differential scanning calorimeter (DSC), polarizing optical microscope (POM) and wideangle X-ray diffractometer (WXRD). The results showed BTA-TB, BTA-NB and BTA-IB were efficient nucleating agents for iPP, and all of them induced formation of a-form spherulites and increased the crystallization peak temperature of iPP dramatically. However, BTA-NB had dual nucleation abilities for both a- and a-form crystals and induced iPP to form a-form spherulites at high content. The optimum contents of BTA-TB, BTA-NB and BTAIB in iPP were 0.25 wt%, 0.3 wt% and 0.15 wt%, respectively. Under the optimum content the crystallization peak temperature of iPP nucleated with BTA-TB, BTA-NB and BTA-IB increased from 122.5 deg C of neat iPP to 130.4 deg C, 132.1 deg C and 130.1 deg C, respectively.

Compounds

#	Formula	Name
1	C21H33N3O3	N,N',N''-tris(tert-butyl)-1,3,5-benzenetricarboxamide
2	C21H33N3O3	N,N',N''-tris(2-methylpropyl)-1,3,5-benzenetricarboxamide
3	C21H33N3O3	N,N',N''-tributyl-1,3,5-benzenetricarboxamide

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Phase	Method	#Points
POMD	1	Normal melting temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	2	Normal melting temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	DTA	1
POMD	3	Normal melting temperature, K ; Crystal	Crystal Liquid Air at 1 atmosphere	DTA	1

Thermodynamics Research Center / ThermoML | Thermochimica Acta

The relationship between side chain isomerism of aliphatic C4 substituted 1,3,5-benzenetricarboxylamides and nucleation effects in isotactic polypropylene

Zhang, Yue-Fei, Zhou, Pei-Zhang, Jiang, You-Zhou, Yang, Xin

ABSTRACT