Investigation of the structure of solution grown crystals of lactide copolymers by means of chemical reactions

作者：Erhard Wolfgang Fischer, Hans J. Sterzel, Gerhard Wegner · 发表于：Aktuelle Probleme der Polymer-Physik · 年份：1973 · DOI：10.1007/978-3-642-47050-9_24 · 被引用次数：682 · 研究领域：Polymer crystallization and properties、biodegradable polymer synthesis and properties、Polymer Nanocomposites and Properties

The relationship between crystallisation and melting behaviour of copolymers and their morphology has been the subject of intensive discussion. One of the main points of interest is the distribution of the noncrystallizable units within the partially crystalline systems. For the explanation of physical properties of copolymers very often equilibrium theories (1, 2) are applied which start from the basic assumption that the noncrystallizable units of the polymer chains are rejected from the crystalline regions. On the other hand, the results of some structure studies by means of small angle X-ray scattering revealed strong evidence, that for example in branched polyethylene the comonomer units are partially incorporated in the crystal (3, 4).