Advertisement

Topics

Effect of hydroxypropyl methylcellulose molecular weight on supramolecular structures and properties of HPMC/sodium citrate photophobic films.

08:00 EDT 9th July 2019 | BioPortfolio

Summary of "Effect of hydroxypropyl methylcellulose molecular weight on supramolecular structures and properties of HPMC/sodium citrate photophobic films."

Photophobic (white) films were prepared by mixing hydroxypropyl methylcellulose (HPMC) of different molecular weights with sodium citrate (SC). Wide angle X-ray diffractometry, small angle X-ray scattering, scanning electron microscopy, dynamic mechanical analysis, whiteness determination and texture analysis were used to investigate the effect of HPMC molecular weight on the aggregation structures and properties of HPMC film. The crystalline integrity decreased with the increased molecular weight of HPMC for these HPMC/SC films. Similar crystallinity was observed for 6HPMC/SC and 15HPMC/SC, which was larger than that of 50HPMC/SC. All the three HPMC/SC film showed surface fractal structure with similar D. With the increasing molecular weight of HPMC, the HPMC/SC film showed honeycomb structures with smaller holes and more compact porous structure, T first increased and then decreased a little, the tensile strength and elongation increased with the increasing HPMC molecular weight. 50HPMC/SC films with the smallest pores showed the largest whiteness. A new T' peak was observed for HPMC/SC film.

Affiliation

Journal Details

This article was published in the following journal.

Name: International journal of biological macromolecules
ISSN: 1879-0003
Pages:

Links

DeepDyve research library

PubMed Articles [31739 Associated PubMed Articles listed on BioPortfolio]

Characterization of sodium caseinate/Hydroxypropyl methylcellulose concentrated emulsions: Effect of mixing ratio, concentration and wax addition.

The effects of mixing ratio (1:1, 2:1 and 4:1 sodium caseinate: Hydroxypropyl methylcellulose, CN:HPMC), HPMC concentration (0, 0.6 and 1.2 wt%), CN concentration (0, 1.25 and 2.5) and beeswax addit...

Chitosan-hydroxypropyl methylcellulose tioconazole films: A promising alternative dosage form for the treatment of vaginal candidiasis.

Vaginal candidiasis is considered a frequent opportunistic mucosal infection and the second most common cause of vaginitis after bacterial vaginosis. In this work, different vaginal films based on chi...

Arylic vs. Alkylic - Hydrophobic Linkers Determine Supramolecular Structure and Optoelectronic Properties of Tripodal Amphiphilic Push-Pull-Thiazoles.

The supramolecular structures and their constituents essentially determine the optoelectronic properties of thin films. The introduction of amphiphilicity to the constituents and interface assembly is...

DNA-functionalized supramolecular polymers: dynamic multicomponent assemblies with emergent properties.

Recent years have witnessed an increasing interest in hybrid molecular systems in which the programmability of DNA hybridization is used to introduce enhanced molecular control in synthetic systems. T...

Supramolecular steric hindrance effect on morphologies and photophysical behaviors of spirocyclic aromatic hydrocarbon nanocrystals.

Three pyrene-based spirocyclic aromatic hydrocarbons (Py-SAHs) were prepared to clarify the roles of molecular segments in regulating the morphologies and photophysical properties of organic microcrys...

Clinical Trials [8195 Associated Clinical Trials listed on BioPortfolio]

Clinical and Structural Outcome of Conventional Versus Accelerated Corneal Collagen Cross-linking (CXL).

Compare different corneal parameters and visual outcome of corneal collagen cross-linking (CXL) with conventional versus accelerated ultraviolet-A irradiation using riboflavin with hydroxy...

Parasitic Ulcer Treatment Trial Pilot

This is a study of optimal treatments for acanthamoeba keratitis. In the first part of the study, participants will be randomized to chlorhexidine monotherapy or chlorhexidine plus povidon...

Efficacy Study of Ketorolac and HPMC to Treat Dry Eye

The purpose of this study is to determine whether ketorolac and Hydroxypropyl Methylcellulose are effective in the treatment of Dry Eye.

The Application of Ticagrelor Combined With Low Molecular Weight Heparin During PCI

The purpose of this study is to determine ticagrelor combining with low molecular weight heparin is effective and safe during PCI or not.

Study of 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) to Treat Niemann-Pick Type C1 (NPC1) Disease

This study evaluates the efficacy and safety of 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) in patients with neurologic manifestations of Niemann-Pick Type C1 (NPC1) Disease. Approximately ...

Medical and Biotech [MESH] Definitions

Polymeric compounds that contain repeating units of hydroxypropyl methylcellulose. The properties of hypromellose polymers can vary greatly and are defined by their molecular weight, the percentage of hydroxyl groups, the percentage of hydroxypropyl groups, and viscosity measurements. They are found a broad variety of commercial products such as FOOD ADDITIVES; EXCIPIENTS; and LUBRICANTS.

A group of atoms or molecules attached to other molecules or cellular structures and used in studying the properties of these molecules and structures. Radioactive DNA or RNA sequences are used in MOLECULAR GENETICS to detect the presence of a complementary sequence by NUCLEIC ACID HYBRIDIZATION.

Methylester of cellulose. Methylcellulose is used as an emulsifying and suspending agent in cosmetics, pharmaceutics and the chemical industry. It is used therapeutically as a bulk laxative.

Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.

Heparin fractions with a molecular weight usually between 4000 and 6000 kD. These low-molecular-weight fractions are effective antithrombotic agents. Their administration reduces the risk of hemorrhage, they have a longer half-life, and their platelet interactions are reduced in comparison to unfractionated heparin. They also provide an effective prophylaxis against postoperative major pulmonary embolism.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Nutrition
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...

Radiology
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...


Searches Linking to this Article