Poly(vinyl alcohol)(PVA)-based polyanion was prepared by esterification of PVA with sulfuric acid.

硫酸与聚乙烯醇(PVA)经酯化制备PVA聚阴离子。

High strength high modulus PVA fiber has the advantages of bigspecific work of rupture, good stickability and low price.

高强高模PVA纤维具有断裂比功大、易于粘接、价格低廉等优点。

Objective To evaluate the effect of PVA combined with gelatinum sponge and coil to perform selective bronchi artery embolism.

目的探讨使用PVA颗粒结合明胶、不锈钢圈行选择性支气管动脉双重塞,以达到安全有效治疗大咯,降低其复发率的目的。

Using the method of latex polymerization,poly vinyl acetate was synhesized with PVA as protective colloid,which was crosslinked with formylamine-group containing component.

采用乳液聚合的方法,以乙酰化聚乙烯醇为保护胶体合成聚醋酸乙烯乳液,并用含甲酰胺基的乙组分与其交联。

Objective To evaluate the effect of bronchial artery embolization (BAE) with polyvinyl alcohol (PVA) foam and gelatinum sponge (GS) for serious hemoptysis.

目的评价聚乙烯醇(PVA)加明胶(GS)塞支气管动脉治疗大咯的疗效。

Amino-PVA-SPION alone was detectable in cytoplasmic endosome-like structures after 3 hours of incubation but resulted in early cell death after 24 hours.

经过三个小时的培养后，单个的氨基化PVA-SPION能在细胞的类内含体结构中被探测到，但是24小时后却造成了早期细胞的死亡。

In this paper, the PVA of major component in the Sensitized emulsion was modified by the polyreaction with formaldehyde, butyl aldehyde, furfural and alcohol.

用甲醛、丁醛、糠醛对重氮感光胶中的主要成分聚乙烯醇进行改性,以增强感光胶的耐水性和耐磨性。

The effect of PH value of the system and the amount of GA on the time of glomeration and swelling ratio of PVA beads were studied.

同时还讨论了体系PH值、GA用量等因素对PVA成球时间及球珠溶胀性能的影响。