A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effects of organic modified hectorite on performance, isothermal crystallization behavior and interface interaction of poly(lactic acid) film
Abstract In this work, in order to improve the properties of PLA, Hec-g@OA/PLA nanocomposite films were prepared by a single-screw extrusion film blown machine with PLA as a matrix and organically modified hectorite (Hec-g@OA) as a filler, and the optimum filler mass ratio of Hec-g@OA was preferred as an objective function of mechanical properties. The mechanical properties of PLA were found to increase from 24.31% to 61.75% when the mass percentage of Hec-g@OA was 0.3 wt%. Secondly, isothermal crystallization behavior of the nanocomposite films was analyzed by simultaneous rheology and FTIR technology for the purpose of further studied the effect of Hec-g@OA on the isothermal crystallization behavior of PLA, which showed that the half-crystallization time of Hec-g@OA/PLA decreased from 7.01 min, 28.99 min and 77.88 min to 3.87 min, 20.59 min and 65.78 min, respectively, at 130 °C, 135 °C and 140 °C. Finally, the form of the interaction between PLA and Hec-g@OA was analysis by electronic structure calculations and energy decomposition, it was analyzed that electrostatic interaction was found to be the main impact factor for induced crystallization of Hec-g@OA/PLA nanocomposite films, while induction and dispersion were found to be the minor impact factors.
Graphical abstract Display Omitted
Highlights Oleic acid was grafted onto hectorite surface by coupling and amidation reactions. Simultaneous rheology and FTIR technology was used to study the crystallization of PLA based films. Interfacial interaction of Hec-g@OA/PLA was evaluated by MD simulations. The interactions form of Hec-g@OA/PLA was calculated from electronic structures.
Effects of organic modified hectorite on performance, isothermal crystallization behavior and interface interaction of poly(lactic acid) film
Abstract In this work, in order to improve the properties of PLA, Hec-g@OA/PLA nanocomposite films were prepared by a single-screw extrusion film blown machine with PLA as a matrix and organically modified hectorite (Hec-g@OA) as a filler, and the optimum filler mass ratio of Hec-g@OA was preferred as an objective function of mechanical properties. The mechanical properties of PLA were found to increase from 24.31% to 61.75% when the mass percentage of Hec-g@OA was 0.3 wt%. Secondly, isothermal crystallization behavior of the nanocomposite films was analyzed by simultaneous rheology and FTIR technology for the purpose of further studied the effect of Hec-g@OA on the isothermal crystallization behavior of PLA, which showed that the half-crystallization time of Hec-g@OA/PLA decreased from 7.01 min, 28.99 min and 77.88 min to 3.87 min, 20.59 min and 65.78 min, respectively, at 130 °C, 135 °C and 140 °C. Finally, the form of the interaction between PLA and Hec-g@OA was analysis by electronic structure calculations and energy decomposition, it was analyzed that electrostatic interaction was found to be the main impact factor for induced crystallization of Hec-g@OA/PLA nanocomposite films, while induction and dispersion were found to be the minor impact factors.
Graphical abstract Display Omitted
Highlights Oleic acid was grafted onto hectorite surface by coupling and amidation reactions. Simultaneous rheology and FTIR technology was used to study the crystallization of PLA based films. Interfacial interaction of Hec-g@OA/PLA was evaluated by MD simulations. The interactions form of Hec-g@OA/PLA was calculated from electronic structures.
Effects of organic modified hectorite on performance, isothermal crystallization behavior and interface interaction of poly(lactic acid) film
Jilili, Yikelamu (author) / Ma, Yumiao (author) / Wang, Zhe (author) / Zhen, Weijun (author)
Applied Clay Science ; 244
2023-08-29
Article (Journal)
Electronic Resource
English
Isothermal crystallization behavior of poly(L-lactic acid)/organo-montmorillonite nanocomposites
| British Library Online Contents | 2009
| British Library Online Contents | 2005
| British Library Online Contents | 2015
Tailoring Crystallization: Towards High-Performance Poly(lactic acid)
| British Library Online Contents | 2014