Physical Properties Morphology

Tsuji, H. and Horikawa, G. (2007) Porous biodegradable polyester blends of poly(L-lactic acid) and poly(s-caprolactone) physical properties, morphology, and biodegradation. Polymer International, 56, 258-266. 

Tsuji, H. and Ishizaka, T. (2001) Porous biodegradable polyesters. 2. Physical properties, morphology, and enzymatic and alkaline hydrolysis of porous poly(E-caprolactone) Films. Journal of Applied Polymer Science, 80, 2281-2291. 

Although visual and microscopical examination, together with simple manual tests, are stiU the primary methods of identification, there are many new sophisticated instmmental methods available based on chemical and physical properties. These methods are able to distinguish between closely related fibers which differ only in chemical composition or morphology. 

There are tests for physical properties such as deasity and hardness (qv) of plastics. Microscopy (qv) is important ia fracture analysis as well as ia analysis of the morphology of polymer systems for an understanding of polymer blend performance. 

Morphology as Polymerized. The principal type of polymerization of PVC is the suspension polymeriza tion route. The morphology formed during polymerization strongly influences the processibiUty and physical properties. Mass-polymerized PVC has a similar morphology to suspension PVC. 

A number of subdivisions of the maceral groups have been developed and documented by the International Commission on Coal Petrology (14). Table 1 Usts the Stopes-Heeden classification of higher rank coals. Periodic revisions include descriptions of the macerals, submacerals, morphology, physical properties, and chemical characteristics. Theories on the mode of formation of the macerals and their significance in commercial appUcations are also included of Reference 14. 

Other characterization methods are usually used to detect the changes in physical properties, which usually result from the changes in the morphology and structures of the substrates due to grafting. 

VasUeios, K., "Physical Properties of Grafted Polymer Mono-layers Studied by Scanning Force Microscopy Morphology, Friction, Elasticity, Dissertations, University of Groningen, Denmark, 1997. 

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