Effect of plasticizer type and amount on hydroxypropyl
The effect of the composition of hydroxypropyl methylcellulose (HPMC)-beeswax (BW) edible coatings on stand-alone film properties and on postharvest quality of coated 'Angeleno' plums was studied. Glycerol (G) and mannitol (M) were tested as plasticizers at two different plasticizer/HPMC ratios (100:1 and 300:1 molar basis).
Effect of plasticizer type and amount on hydroxypropyl
An increase in BW content reduced film flexibility and reduced WVP of only G-plasticized films. Coatings reduced plum softening and bleeding, but were not effective in reducing plum weight loss. At low plasticizer content, coatings reduced texture loss effectively. Low BW also lowered plum bleeding.
Effect of Plasticizer Type and Amount on Hydroxypropyl
The effect of the composition of hydroxypropyl methylcellulose (HPMC)-beeswax (BW) edible coatings on stand-alone film properties and on postharvest quality of coated 'Angeleno' plums was...
Effect of plasticizers on microstructure, compatibility and
A new technique of dyeing HPS with iodine was successfully developed and used to identify the two phases of HPMC/HPS blends in our previous work [3].As shown in Fig. 1 under optical microscope observation, regardless of the type of plasticizer, HPS phase became dark after being dyed with iodine, and the two phases of HPMC and HPS were readily identified due to the color difference, which meant
Comparative Effect of Different Plasticizers on Barrier
The effect of different plasticizers (glycerol, polyethylene glycol, sorbitol) on the mechanical, water vapor barrier, optical, and moisture sorption properties of hydroxypropyl methylcellulose (HPMC) -based flexible films was examined in this study. Methods
- How much hydroxyl group does glycerol-plasticized film have?
- WVP of pure HPMC film was 0.45 g mm/kPa m 2 h, at 50% plasticizer concentration, and glycerol-plasticized film demonstrated the highest WVP values (1.56 g. mm/kPa m 2 h). The number of hydroxyl groups increases with an increase in plasticizer concentration increasing the WVP of film.
- Does plasticizer type affect chitosan/Zein film rheological and structural properties?
- The chitosan/zein film with PEG-400 exhibited superior properties. The purpose of this study was to evaluate the effect of plasticizer type (glycerol, PEG-400, and sorbitol) and concentration (0%, 15%, 30% and 45%, w /w dry polymer weight) on rheological and physico-mechanical and structural properties of chitosan/zein blend film.
- Do plasticizers affect hydroxypropyl methylcellulose / hydroxy propyl starch blends?
- In this study the influences of plasticizers on the structures and properties of hydroxypropyl methylcellulose/hydroxypropyl starch blends were investigated. The self-similar structure was significantly affected by the type of plasticizers.
- Does plasticizer affect WVP of HPMC film?
- Statistical analysis revealed that the type of plasticizer had a significant (p <0.05) effect on the WVP of HPMC film. WVP of pure HPMC film was 0.45 g mm/kPa m 2 h, at 50% plasticizer concentration, and glycerol-plasticized film demonstrated the highest WVP values (1.56 g. mm/kPa m 2 h).
- Can glycerol be used as a plasticizer for HPMC film?
- Glycerol and PEG were quite effective as a plasticizer for HPMC film. WVP and EMC of glycerol-plasticized film were higher as compared to PEG-plasticized film. The addition of plasticizers increased the EMC of HPMC films which further increased with increasing plasticizer concentration.
- How do plasticizers affect the mechanical properties of a polymer film?
- The addition of plasticizers affects the mechanical properties and WVP of a polymer film by altering the intermolecular interaction of polymer; also, the added plasticizers alter the moisture sorption behavior of resulting films which is an important factor in deciding the stability of edible film/coating.
