Thermal and mechanical properties of poly(butylene succinate) nanocomposites with various organo‐modified montmorillonites

Abstract

Nanocomposites based on biodegradable poly(butylene succinate) (PBS) and layered silicates were prepared by melt intercalation. Nonmodified montmorillonite (MMT) and MMTs (DA-M, ODA-M, ALA-M, LEA-M, and HEA-M) organo-modified by protonated ammonium cations {i.e., those of dodecylamine, octadecylamine, 12-aminolauric acid, N-lauryldiethanolamine, and 1-[N,N-bis(2-hydroxyethyl)amino]-2-propanol, respectively} were used as layered silicates. From morphological studies using transmission electron microscopy, DA-M, ODA-M, and LEA-M were found to be dispersed homogeneously in the matrix polymer, whereas some clusters or agglomerated particles were observed for ALA-M, HEA-M, and MMT. The enlargement of the difference in the interlayer spacing between the clay and PBS/clay composite, as measured by X-ray diffraction, had a good correlation with the improvement of the clay dispersion and with the increase in the tensile modulus and the decrease in the tensile strength of the PBS composites with an inorganic concentration of 3 wt %. Dynamic viscoelastic measurements of the PBS/LEA-M nanocomposite revealed that the storage modulus and glass-transition temperature increased with the inorganic concentration (3-10 wt %).

Mechanical properties and structure development in poly(butylene succinate)/organo-montmorillonite nanocomposites under uniaxial cold rolling

“…PBS (Bionolle #1020) was supplied by Showa Highpolymer Co., Ltd., Japan with MFI value of 25 g/10 min (190°C, 2.16 kg), melting temperature of 115°C and density of 1.26 g/cm 3 . OMMT (Nanomer ® I.30TC, Nanocor Inc, USA) with cation exchange capacity (CEC) of 110 mequiv/100 g was used in this study.…”

“…Poly(butylene succinate) (PBS) is one of the most promising biodegradable aliphatic polyesters. PBS is commercially available with many desirable properties including biodegradability, melt processability, thermal and chemical resistance [1][2][3][4][5][6][7]. Addition of organo-montmorillonite (OMMT) has been reported to increase the strength and modulus of PBS [1][2][3].…”

Reactive processing of maleic anhydride-grafted poly(butylene succinate) and the compatibilizing effect on poly(butylene succinate) nanocomposites

“…In recent years, attention has been devoted to the nanocomposites based on biodegradable polymers and organoclay due to the increasing awareness on the plastic waste pollution. Poly(butylene succinate) (PBS) is a biodegradable polyester with many desirable properties including biodegradability, melt processability, thermal and chemical resistance [10][11][12][13][14]. Fujimaki [13] has compared the properties between the biodegradable PBS and the conventional plastic packaging materials.…”

“…Kusmono et al [23] discovered that the incorporation of MA grafted styrene-ethylene/butylenestyrene was able to enhance the strength and ductility of polyamide 6/polypropylene nanocomposites. Although studies on PBS nanocomposites are rather abundant [10][11][12], study on the PBS nanocomposites compatibilized with MA-grafted polymers is rare. To date, PBS-g-MA is not commercially available and there is limited literature reported on this material.…”

Effect of organo-modified montmorillonite on poly(butylene succinate)/poly(butylene adipate-co-terephthalate) nanocomposites

“…Many studies have focused on improving the compatibility between polymer components, either by adding third component, or by inducing a chemical reaction which leads to the modification of polymer interface [3]. To improve the properties of PBS, many researchers introduce clays to the PBS system [4][5][6]. Researchers also tried to improve the properties of PBS by blending with other polymers [7].…”