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聚乙烯醇 [PVA],Poly(vinyl alcohol);average Mw 85,000-124,000, 87-89% hydrolyzed

线性分子式: [-CH2CHOH-]n CAS号: 9002-89-5 MDL编号: MFCD00081922 NACRES: NA.23
制造商品牌: 西格玛 Sigma-Aldrich
货号(SKU): 363081
CAS号: 9002-89-5
MDL号: MFCD00081922
签订合同 √ 正规发票 √ 技术支持 √ 质量保障 √ 全程可追溯 √
¥590.70

说明

聚乙烯醇(PVA)是一种线性亲水合成聚合物,其主链仅由碳原子组成。由于其惰性和稳定性,它被认为是安全和生物相容的。它在厌氧和好氧条件下也是可生物降解的。由于其独特的性质,如粘附性,安全性,强度,成膜性,溶胀性和非致癌性,它广泛用于纸张,粘合剂,食品,生物医学和制药工业。部分水解的PVA(87-89%)更易溶于水,并且具有更大的柔韧性和对疏水表面的粘附性。

一般描述

Polyvinyl alcohol(PVA) is a linear hydrophilic synthetic polymer with a backbone composed of only carbon atoms. Due to its inertness and stability, it is considered safe and biocompatible. It is also biodegradable under both anaerobic and aerobic conditions. Owing to its unique properties such as adhesiveness, safety, strength, film-forming, swelling, and non-carcinogenicity, it is widely used in paper, adhesives,food, biomedical and pharmaceutical industries. The partially hydrolyzed PVA(87–89%) is more soluble in water and it has more flexibility and adhesion tohydrophobic surfaces.
 

应用

PVA has remarkable properties for a polymer to be used in drug delivery systems such as high surface stabilization, and low protein adsorption. The use of PVA in solid dispersion prevents crystal formation and improves the solubility of drugs. It can also be used as a granulating liquid to prevent slow crystal growth and nucleation. In conjunction with its copolymers, it can be useful for both hydrophilic and hydrophobic drugs. PVA hydrogels and microparticles can be used in drug delivery systems for cancer drugs.

PVA can be used as a surface stabilizer in preparing drug delivery carriers for the slow release of tetracycline.

Highly concentrated alginate/polyvinyl alcohol (PVA) bioinks can be used to prepare 3D bioprinting porous scaffolds. Partial diffusion of PVA sols from printed scaffolds creates a large number of micropores.

PVA can also be used as a water-soluble polymer template to synthesize nanosized polypyrrole via in situ polymerization. PVA generates stable dispersions of polypyrrole nanospheres in water and the size of nanospheres depends on the molecular weight and concentration of PVA.
 
 

属性

质量水平

形式

powder or crystals

分子量

average Mw 85,000-124,000

落球

23-27 cP, 4 % in H2O(20 °C)(lit.)

InChI

1S/C2H4O/c1-2-3/h2-3H,1H2

InChI key

IMROMDMJAWUWLK-UHFFFAOYSA-N

 

安全信息

储存分类代码

13 - Non Combustible Solids

WGK

WGK 1

个人防护装备

Eyeshields, Gloves, type N95 (US)

商品规格
属性名称属性值
储存温度 Storage temp.常温阴凉避光
全球实时库存 Availability √美国St. Louis ≥ 50 | 欧洲Eur. ≥ 12 | 東京Tokyo ≥ 20 | 香港与北京 ≥ 50
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