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Merck

189480

Sigma-Aldrich

聚醋酸乙烯酯

average Mw ~100,000 by GPC, beads

别名:

聚醋酸乙烯酯

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25 G
$159.00
500 G
$387.00
1 KG
$770.00

$159.00


国内现货,预计发货时间2025年4月25日详情


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25 G
$159.00
500 G
$387.00
1 KG
$770.00

About This Item

线性分子式:
[CH2CH(O2CCH3)]n
CAS号:
MDL编号:
UNSPSC代码:
12162002
PubChem化学物质编号:
NACRES:
NA.23

$159.00


国内现货,预计发货时间2025年4月25日详情


获取大包装报价

表单

beads

质量水平

分子量

average Mw ~100,000 by GPC

粘度

17-21 sec.(25 °C, Ford, no. 4)(lit.)

密度

1.18 g/mL at 25 °C

储存温度

2-8°C

SMILES字符串

COC(=O)C=C

InChI

1S/C4H6O2/c1-3-6-4(2)5/h3H,1H2,2H3

InChI key

XTXRWKRVRITETP-UHFFFAOYSA-N

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一般描述

聚乙烯醇(PVAc)是一种非结晶的无规立构聚合物。它是由乙酸乙烯酯单体通过自由基聚合来制备。由于其低毒性和良好的弹性,它常被用于食品行业。PVAc膜可用作载体和口服药物的发射传感器。

应用

聚乙烯乙酸酯可用作:
  • 制备气体和湿度传感器应用中聚合物纤维的起始原料。 柠檬酸掺杂的PVAc纳米纤维垫可用于开发室温下检测三甲胺气体的传感器。
  • 具有控释给药性能的漂浮片的聚合物涂层。 PVAc是一种赋形剂,可以确保可靠安全的药物释放。由于聚乙烯乙酸酯涂层的低固有密度和高弹性,PVAc-基骨架片可以流动。
它也可用于通过CNF的悬浮液与PVAc和聚乙烯醇溶液的简单混合来制备纤维素纳米微纤丝(CNF)-PVAc 纳米复合粘合剂。CNF的加入改善了纳米复合材料的机械性质。

储存分类代码

11 - Combustible Solids

WGK

nwg

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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K Kolter et al.
International journal of pharmaceutics, 457(2), 470-479 (2013-10-01)
Polyvinyl acetate-based colloidal aqueous polymer dispersion Kollicoat(®) SR 30 D results in coatings characterized by moderate swelling behaviour, lipophilicity, pH-independent permeability for actives and high flexibility to withstand mechanical stress and is therefore used for controlled release coating. The colloidal
Ons Chaabouni et al.
Carbohydrate polymers, 156, 64-70 (2016-11-16)
Cellulose nanofibrils (CNFs) are nanoscale cellulose produced from renewable resources with strong reinforcing potential when included in a polymer matrix. In this work, the effect of the addition of CNFs on the properties of waterborne polyvinylacetate (PVA) adhesive was investigated.
Congming Xiao et al.
International journal of biological macromolecules, 52, 349-352 (2012-10-31)
Tailor-made conjunct of methyl cellulose (MC) and polyvinyl acetate (PVAc) was synthesized through the combination of reversible addition-fragmentation chain transfer (RAFT) polymerization and thiol-ene click reaction. MC was firstly transferred into unsaturated MC (UMC), and then covalently connected with well-defined
Il Gyu Kang et al.
American journal of rhinology & allergy, 24(5), 392-395 (2011-01-20)
The aim of this study was to evaluate the effect of repeated expandable polyvinyl acetate (EPA) packing for preventing stenosis of the frontal sinus ostium after patients undergo functional endoscopic sinus surgery (FESS). A nonrandomized, prospective study of 20 patients
Seon Tae Kim et al.
International journal of pediatric otorhinolaryngology, 77(1), 113-116 (2012-11-08)
The purpose of this prospective study was to determine the effectiveness of polyurethane foam (PUF) and polyvinyl acetate (PA) as packing materials for reducing post-conchotomy bleeding, pain, and headaches. This study was a prospective, randomized and single-blinded controlled study. Fifty-two

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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