TERNARY BLENDS OF PCL, SAN15 AND SMA14 - MISCIBILITY, CRYSTALLIZATIONAND MELTING BEHAVIOR, AND SEMICRYSTALLINE MORPHOLOGY

Citation
M. Vanneste et G. Groeninckx, TERNARY BLENDS OF PCL, SAN15 AND SMA14 - MISCIBILITY, CRYSTALLIZATIONAND MELTING BEHAVIOR, AND SEMICRYSTALLINE MORPHOLOGY, Polymer, 36(22), 1995, pp. 4253-4261
Citations number
50
Categorie Soggetti
Polymer Sciences
Journal title
ISSN journal
00323861
Volume
36
Issue
22
Year of publication
1995
Pages
4253 - 4261
Database
ISI
SICI code
0032-3861(1995)36:22<4253:TBOPSA>2.0.ZU;2-P
Abstract
The miscibility and phase behaviour of the ternary blend consisting of poly(epsilon-caprolactone) (PCL), poly(styrene-co-acrylonitrile) with 15wt% acrylonitrile (SAN15) and poly(styrene-co-maleic anhydride) wit h 14wt% maleic anhydride (SMA14) have been investigated by means of vi sual observations, light transmission measurements, differential scann ing calorimetry (d.s.c.) and dynamic mechanical thermal analysis. The influence of the molecular weight of the components and of the blend c omposition is discussed. All crystallizable blends show two melting en dotherms in the d.s.c. thermograms. The crystallization conditions wer e varied to examine this complex melting behaviour. The lamellar morph ology of the semicrystalline blends was studied to obtain information about the most important morphological parameters (e.g. long spacing, thickness of the crystalline and amorphous layers, and width of the tr ansition layer). On the basis of these morphological parameters, it wa s possible to get an idea about the type of segregation of the amorpho us components (SAN15 and SMA14) in the blends during crystallization.