Effect of plasticizers on melt processability and
The effect of plasticizer content on the melt viscosity, thermal properties (DSC), spectral characteristics (ATR-FTIR), tensile properties and water permeability was investigated in order to...
Chemically circular, mechanically tough, and melt-processable
However, current semicrystalline PHAs face three long-standing challenges to broad commercial implementation and application: lack of melt processability, mechanical brittleness, and unrealized recyclability, the last of which is essential for achieving a circular plastics economy.
Polymers | Free Full-Text | PHB Processability and Property
Traditionally, the addition of plasticizers makes it possible to reduce the glass transition temperature (T g) and the average melting temperature (T m ), which facilitates thermal processing and reduces the probability of thermal degradation.
Effect of plasticizers on melt processability and properties
The effect of plasticizer content on the melt viscosity, thermal properties (DSC), spectral characteristics (ATR-FTIR), tensile properties and water permeability was investigated in order to improve
Effect of plasticizers and polymer blends for processing
Effect of plasticizers on the thermal processability of kraft softwood lignin In order to develop windows of temperatures in which lignin-based material is processable and does not crosslink significantly, plasticizers can be used to produce a flowable material with thermoplastic behavior.
- Does plasticizer content affect melt properties of PHB?
- The amounts of plasticizers varied from 10 wt.% to 30 wt.% relative to PHB. The effect of plasticizer content on the melt viscosity, thermal properties (DSC), spectral characteristics (ATR-FTIR), tensile properties and water permeability was investigated in order to improve the processability and properties of PHB.
- How do plasticizers affect crystallinity?
- The addition of plasticizers can cause either a decrease in crystallinity due to the dilution effect or its increase due to the incorporation of an additive into the amorphous phase of a semicrystalline polymer, decreasing the melting viscosity, which results in higher chain diffusion and a faster crystallization rate [19, 37].
- How do plasticizers affect polymer elongation?
- Plasticizers as polymer additives serve to decrease the intermolecular forces between the polymer chains, resulting in a softened and flexible polymeric matrix. They increase the polymer’s elongation and enhance processability by lowering the melting and softening points and viscosity of the melts .
- Can Plasticizers improve PHB processing?
- The crystallinity index values calculated for both plasticizers increased, indicating promising candidates to improve PHB processing, with a possible reduction in melt viscosity accelerating the crystallization rate. PHB/P1 cooling curves (Figure 5 b) exhibited a non-linear relationship with the plasticizer concentration.
- Why do plasticizers have higher tensile properties than polymers?
- Plasticizers with greater free volume than the polymer reduce the relative number of polymer–polymer contacts, providing the flexibility of the structure and thereby decreasing the rigidity of the three-dimensional structure, resulting in higher ε values [17, 43]. Tensile properties of PHB, PHB/P1, and PHB/P2 blends.
- Do plasticizers reduce thermal degradation?
- Traditionally, the addition of plasticizers makes it possible to reduce the glass transition temperature (T g) and the average melting temperature (T m), which facilitates thermal processing and reduces the probability of thermal degradation.
