Plasticizer effect of novel PBS ionomer in PLA/PBS ionomer blends
The use of PBS or PBS ionomer resulted in faster crystallization rates of the blends. From an observation of the overall crystallization rate and spherulite radial growth rate, it was...
Plasticizer effect of novel PBS ionomer in PLA/PBS ionomer blends
The use of PBS or PBS ionomer resulted in faster crystallization rates of the blends. From an observation of the overall crystallization rate and spherulite radial growth rate, it was concluded that the abundant ion groups increased the compatibility between the PLA and PBSi chains, and the PBSi molecules acted as a plasticizer in the PLA blends.
Plasticizer Effect of Novel PBS Ionomer in PLA/PBS Ionomer Blends
Plasticizer Effect of Novel PBS Ionomer in PLA/PBS Ionomer Blends Sung Bae Park, Sung Yeon Hwang, Cheol Whan Moon, and Seung Soon Im* Department of Fiber and Polymer Engineering, College of Engineering, Hanyang University, Seoul 133-791, Korea Eui Sang Yoo KITECH Textile Ecology Laboratory, Ansan City, Gyeonggido, Korea
Novel environmentally sustainable xylitol-based plasticizer: synthesis
When the ratio of PLA/PBS is 60/40, the tensile modulus decreased from 1442 to 886 MPa, and the elongation at break increased from 208 to 387%. It is due to PBS flexible molecular chains introduced in the blend, which is enhanced the ability to absorb energy when subjected to tensile stress, and easy to deformation under the same tensile stress.
Blending modification of PBS/PLA and its enzymatic degradation - Springer
The compatibility of PBS/PLA was improved after adding BPO. The addition of BPO also improved the crystallization and promoted the complete decomposition of PBS/PLA, respectively. The blends with BPO was degraded by proteinase K. The degradation rate of the blends reached 67% after 96 h degradation.
- How to confirm the reaction mechanism of PLA and PBS with modifiers?
- Analysis of the chemical structure of the blends To confirm the reaction mechanism of PLA and PBS with modifiers and understand the structure of the products generated during the reaction, we recorded the infrared spectra of PLA, PBS, GMA, TMPTA and the blends G0T0 and G10T10.
- What are the mechanical properties of PLA/PBS blends?
- Mechanical properties The mechanical properties of PLA/PBS blends were evaluated by tensile strength and impact strength tests. Fig. 10 exhibits the relationship between the stress-strain curve, impact strength, tensile strength, elongation at break and modifier content of PLA/PBS blends.
- Why do PLA/PBS blends have better thermal stability?
- The improved thermal stability was attribute to the formation of graft copolymers at the interface in the PLA/PBS blends. Polymers with strong crystallization ability have better thermal stability [3, 54]. The PLA/PBS blends exhibited two-step degradation.
- Does EGMA interact with PLA & PBS?
- Xue et al. modulated the interfacial morphology of PLA/PBS blends with ethylene-methyl acrylate-GMA (EGMA). The terminal groups of PLA and PBS can react with epoxy groups on the molecular structure of EGMA. In-situ formation of branched structure acts as a bridge between the two phases and mechanical properties of blends are greatly improved.
- What is the crystallization temperature of PBS?
- The crystallization temperature of PBS is about 65 °C, while evident crystallization behavior cannot be seen in pure PLA, probably because of the very low crystallization rate . The crystallization phenomenon was not obviously observed in the blend G0T0.
- Is there a long chain branched reaction between PLA and PBS?
- The occurrence of the long chain branched reaction between the PLA and PBS is evidenced by the rheological results and Fourier-transform infrared spectroscopy analysis. Appropriate amount of GMA reduces the size of dispersed PBS phase and enhances the interfacial strength.
