Development of polymer inclusion membranes for palladium recovery
These processes are not only simple in design, easy to operate, and environmentally friendly, but also have high stability, good mechanical properties, and chemical resistance. In addition, they are thin and flexible compared to other membranes [2], [10]. Three materials are primarily used in PIM. These are the plasticizer, carrier, and base
Cellulose Acetate Thermoplastics with High Modulus, Dimensional
Cellulose diacetate (CDA) can be melt-processed to produce numerous and widely-used plastic products. However, due to the high glass transition temperature (Tg) of CDA, the addition of up to 30 wt% of micromolecular plasticizers is indispensable, which significantly reduces the dimensional stability and raises safety concerns from the migration of plasticizers. In this work, a series of CDA
Effects of Plasticizers and Stabilizers on Thermal Stability
The lower limit of Gibbs free energy of mixing required for plasticization of PVC using monomeric plasticizers was calculated to be about 0.9 J/g, and that for polymeric plasticizers 0.15 J/g.
Plasticizer Compatibility and Thermal and Rheological Properties
additional thermal stability and plasticizer permanence data (Figure 7). The time sweep experiment shown in Figure 9 is effective in predicting the permanence of a plasticizer in a formulation or potential polymer cross-linking during extrusion. An increase in the viscosity of a polymer with a volatile plasticizer is indicative
Polymers | Free Full-Text | Study on Cellulose Acetate Butyrate
Cellulose acetate butyrate (CAB) is a widely used binder in polymer bonded explosives (PBXs). However, the mechanical properties of PBXs bonded with CAB are usually very poor, which makes the charge edges prone to crack. In the current study, seven plasticizers, including bis (2,2-dinitro propyl) formal/acetal (BDNPF/A or A3, which is 1:1 mixture of the two components), azide-terminated
- Which polymers are plasticized?
- The plasticizers produced have been applied in 60 polymers and more than 30 groups of products. Industrially, the most common plasticized polymers are PVC, poly (vinyl butyral) (PVB), poly (vinyl acetate) (PVAc), acrylics, cellulose molding compounds, nylon, polyamides and certain copolyamides.
- Why are plasticizers important in biopolymer-based films & coatings production?
- In biopolymer-based films and coatings production, plasticizers are also essential additives since they can improve flexibility and handling of films, maintain integrity and avoid pores and cracks in the polymeric matrix .
- What plasticizers are used for PLA?
- In addition to these plasticizers, poly (ethylene glycol) (PEG), an environment-friendly material, is one of the most widely used plasticizers for PLA [ 8, 12, 17, 18, 19, 20, 21 ]. In our previous study, PLA was plasticized with PEG-8000.
- Are biopolymers a good substitute for conventional plasticizers?
- The use of natural and/or biodegradable plasticizers, with low toxicity and good compatibility with several plastics, resins, rubber and elastomers in substitution of conventional plasticizers, such as phthalates and other synthetic conventional plasticizers attracted the market along with the increasing worldwide trend towards use of biopolymers.
- Which plasticizer is used in plasticization of polyethylene glycol (PEG)?
- In this work, PLA was plasticized with poly (ethylene glycol) (PEG) having different molecular weights such as 400, 8000 and 35,000 g/mol at various concentrations ranging from 5 to 20%. In addition, a new plasticizer, PEG-functionalized polyhedral oligomeric silsesquioxane (PEG-POSS), was used for comparison.
- Why is polymer stabilization important?
- Stabilization of polymer material continues to be an important technical field with lot of industrial and scientific attention. Future developments in the field of polymer stabilization need to reflect the corresponding economical requirements.
