Dielectric Properties of Polybutylene Succinate and Polybutylene Succinate Adipate

Abstract

In this paper, the influence of the various degradation conditions, on the molecular and 19 supramolecular structure of polybutylene succinate (PBS) and polybutylene succinate adipate 20 (PBSA) copolymer during degradation time is described. Experiment was carried out by the use 21 injection molded samples and normalized conditions of biodegradation in soil, composting and 22 artificial weathering. Materials were studied by using size-exclusion chromatography (SEC) 23 coupled with multiangle laser light scattering (MALLS) detection and wide-angle X-ray diffraction 24 (WAXD). Additionally, the physical and mechanical properties of the samples were determined. 25 The performed experiments clearly show difference impact of selected degradation condition on 26 the macroscopic, supramolecular and molecular parameters of studied aliphatic polyesters. The 27 structural changes in PBS and PBSA explain the observed changes in the physical and mechanical 28 properties of the obtained injection molded samples. 29

Thermo-rheological effects on successful 3D printing of biodegradable polyesters

“…PBSA is a biodegradable thermoplastic copolyester composed of butylene succinate and butylene adipate repeating units randomly distributed along the chain (21)(22). It has good melt-processability and chemical resistance (23)(24)(25)(26)(27)(28)(29)(30)(31). Some researchers have studied these materials for applications like packaging and have studied specially synthesized copolymers or commercially available samples (21-22, 29, 32-33).…”

Effects of crystallinity on dielectric properties of poly(L‐lactide)

“…Of the total value of 29.4, only 1.4 is related to χ c , and the remaining 28.0 has no relation with χ c . It is reasonable to assume that ions rather than electrons play a major role in electrical conduction in PLLA, as is often the case in other biodegradable polymers [10]. It seems that amorphous regions exert a dominant influence on electrical conduction, since the amorphous regions have a large free volume where ionic transport is easy and since molecular motions that assist the hopping of ions are also active in the amorphous regions.…”