Crystallization Behavior of Poly[(butylene succinate)‐co‐adipate] Nanocomposite

Abstract

Summary: The unique crystallization behavior of a poly[(butylene succinate)‐co‐adipate] (PBSA) nanocomposite is addressed. Nanocomposites have been prepared by melt blending PBSA and organically modified synthetic fluorine mica (OSFM) in a batch mixer. The structure of the nanocomposite is studied by using X‐ray diffraction and transmission electron microscopy, which reveal a coexistence of exfoliated and intercalated silicate layers homogeneously dispersed in the PBSA matrix. The non‐isothermal crystallization behavior of PBSA and the nanocomposite samples is studied by differential scanning calorimetry (DSC). Various models, namely the Avrami method, the Ozawa method, and the combined Avrami‐Ozawa method, are applied to describe the kinetics of the non‐isothermal crystallization. All analyses reveal that the incorporation of the OSFM alters the crystallization properties of PBSA but in ways unexpected from other polymer nanocomposite systems. Polarized optical microscopy is used to support this conclusion. The activation energy for the non‐isothermal crystallization of both samples is evaluated by using three different methods. The results show that the absolute value of the activation energy for the nanocomposite is higher than that of the neat polymer. This indicates the slower crystallization kinetics of the nanocomposite. The effect of incorporation of OSFM on the cold crystallization behavior of neat PBSA is also studied by both conventional and temperature‐modulated DSC.Polarized optical microscopy image of the PBSA/OSFM nanocomposite at 70 °C during non‐isothermal crystallization from the melt.magnified imagePolarized optical microscopy image of the PBSA/OSFM nanocomposite at 70 °C during non‐isothermal crystallization from the melt.

The influence of filler surface modification on mechanical and material properties of layered double hydroxide‐containing polypropylene composites

“…The steep gradient of G ′ and G ′′, particularly at low frequencies, is thought to be attributed to minimal or no interaction between the fillers (cLDH1, cLDH2, and nLDH) and the matrix. The change in rheological properties with frequency could be related to the formation of different types of composites (nanocomposites or microcomposites) . The viscosity continuously decreased with increasing shear rate, which is typical of shear‐thinning matrices.…”

“…The change in rheological properties with frequency could be related to the formation of different types of composites (nanocomposites or microcomposites). [49][50][51] The viscosity continuously decreased with increasing shear rate, which is typical of shear-thinning matrices. The PP/PP-g-MA/iLDH composite was an exception.…”

Biodegradable polymer nanocomposites

“…Although early work on biodegradable nanocomposites focused on PLA, PBS is attracting increasing attention due to its ease of processing (Ray et al ., 2005;2006a;2006b;Guangxin and Yoon, 2005;Ray and Bousmina, 2006;Shih et al ., 2007;Makhatha et al ., 2008).…”

Biodegradable polymer blends and composites: An overview

“…In another work reported by Ray and Bousmina [93], crystallization behavior of PBSA/organically modified synthetic fluorine mica (OSFM) nanocom posites was studied; the nanocomposites were pre pared by melt blending using aninternal batch mixer.…”