Plasticiser loss from plastic or rubber products through diffusion and
The migration of plasticiser from polymers to a gas phase is a two-step process that includes diffusion from the polymer bulk to the surface followed by evaporation from the surface to the...
A model study for release of plasticizers from polymer films through
A model has been applied to release of plasticizers from polymer films through vapor phase, for which the overall rate of release may be generally determined by evaporation of the plasticizer from th...
Effect of plasticizers and polymer blends for processing
Plasticizers depress the glass transition temperature (Tg) of polymers and produce a flowable material at lower temperatures. The use of plasticizers to depress Tg of lignin is important, since at high processing temperatures lignin crosslinks, making it intractable. The goal of this study was to assess plasticizers and polymer blends for the ability to retard a commercial softwood kraft
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
An Imidazolium-Based Ionic Liquid as a Model to Study Plasticization
This study evaluates the use of multiple commonly used plasticizers from different classes against a relatively non-toxic at specified concentrations—and monocationic IL within the Eudragit RL100 polymer.
- Does molecular weight affect plasticizer migration rate?
- Other used plasticizers have very similar molecular weights which hinders the studying effect of molecular weights on the migration rate. Plasticizer migration from PVC films can be also studied by the leaching test using two different solvents, water and isobutanol [31, 32].
- Why are plasticizers used in carbohydrate film preparation?
- Moreover, plasticizers are used in the preparation of the film in order to promote the desired mechanical characteristics. The commonly used plasticizers in carbohydrate-films are polyols such as glycerol and sorbitol.
- How does plasticizer concentration affect film elongation?
- The increasing of plasticizer concentration from 20% to 40% led to a significant increase in the film elongation: 17.56% to 32.75% for Gly-plasticized films. For Sor-plasticized and PG-plasticized films, the elongation increased from 21.52% to 22.31% and from 18.80% to 27.23%, respectively.
- Does plasticizer concentration affect Young's modulus values of pectin plasticized films?
- The effect of plasticizer concentration (20–40%) on the Young’s modulus values of pectin plasticized films was shown in Figure 2 c. Young’s modulus values regularly decreased with the addition of plasticizer content, meaning that LMP films lost their stiffness and became more flexible with the addition of the plasticizer.
- Which plasticizers are used in pectin films?
- In this study, different plasticizers including glycerol (Gly), sorbitol (Sor), propylene glycol (PG) and polyethylene glycol 300 (PEG 300), in five concentrations, were tried in pectin films and the effect on tensile and thermal properties and then on indomethacin in vitro release of LMP films were evaluated. 2. Materials and Methods 2.1.
- Which plasticizer has higher migration rates than other plasticizers?
- Having linear structures and relatively lower molecular weights, BIO and DOA showed higher migration rates compared to other plasticizers. Although, FTIR results showed that BIO and DOA have higher compability with PVC, migration rates of them are still higher than others.
