The Effect of Plasticizers towards the Characteristics
The main objective of this study is to study the effect of different plasticizers on the methylcellulose (MC) based film food packaging. Sorbitol and red palm oil (RPO) were used as plasticizers
Hydroxypropyl Methylcellulose - an overview | ScienceDirect Topics
Methyl-hydroxy-propyl-cellulose (MHPC) is a yellowish, odorless, and nontoxic powder. It is partially etherified with methyl groups, with a small number of substituted hydroxyl-propyl groups. The viscosity of aqueous solutions remains constant within a pH range of 3.0–11.0.
The influence of different plasticizers on some physical and
The positive effect of the presence of hydrophilic molecules, such as PEG 400, in HPMC formulations has been extensively studied. Specifically, PEG 400 used as plasticizer, increases the...
Hydroxypropylmethylcellulose - an overview | ScienceDirect Topics
Hydroxypropyl methylcellulose (HPMC) or hypromellose refers to soluble methylcellulose ethers. HPMC is used as a thickening agent, binder, film former, and hydrophilic matrix material. HPMC polymers for fabricating hydrophilic matrix systems are available in various viscosity grades ranging from 4000–100,000 mPa s.
Preparation and characterization of hydroxypropyl methyl cellulose
The design and feasibility of a simple process of incorporating stable nanoparticles into edible polymer films is demonstrated with the goal of enhancing the dissolution rate of poorly water soluble drugs. Nanosuspensions produced from wet stirred media milling (WSMM) were transformed into polymer f
- What is hydroxypropyl methylcellulose (HPMC)?
- 1. Introduction Being a readily available non-ionic edible plant derivative, hydroxypropyl methylcellulose (HPMC) is becoming attractive to form transparent, odorless, tasteless, oil-resistant, water-soluble edible film, showing good mechanical property and efficient lipid barrier but moderate resistance to water vapor transport [ 1, 2 ].
- What is the chemical structure of hydroxypropyl methylcellulose?
- Chemical structure of hydroxypropyl methylcellulose, R = H, −CH 3 or - (OCH 2 CHCH 3) x OH. By reducing the molar substitution of hydroxyl propyl group, the glass transition temperature of HPMC can be reduced to 40o C. HPMC forms flexible and transparent films from aqueous solution.
- How does hydroxypropyl methylcellulose form a gel?
- HPMC possesses increased organo-solubility and thermo-plasticity compared to other methyl cellulose counterparts. It forms gel upon heating with gelation temperature of 75–90o C. Figure 3.10. Chemical structure of hydroxypropyl methylcellulose, R = H, −CH 3 or - (OCH 2 CHCH 3) x OH.
- Is hydroxypropyl methylcellulose water soluble?
- There are more than 100 prescription drugs in the US market, in which one excipient is commonly used, that is, hydroxypropyl methylcellulose (HPMC). Although this polymer is water soluble, it provides gelling properties when exposed to an aqueous environment.
- 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.
- What are the properties of methyl cellulose (HPMC)?
- It has unique solubility properties with solubility in both hot and cold organic solvents. HPMC possesses increased organo-solubility and thermo-plasticity compared to other methyl cellulose counterparts. It forms gel upon heating with gelation temperature of 75–90o C.
