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435465

Sigma-Aldrich

聚（乙二醇）- 嵌段 - 聚（丙二醇）- 嵌段 - 聚（乙二醇）

average Mn ~5,800

别名:

Pluronic® P-123, PEG-PPG-PEG

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About This Item

CAS号:
9003-11-6
MDL编号:
MFCD00082049
UNSPSC代码:
12352104
PubChem化学物质编号:
24867236
NACRES:
NA.23

蒸汽密度

>1 (vs air)

质量水平

100

蒸汽压

<0.3 mmHg ( 20 °C)

形式

solid

投料比

20:70:20 (EO:PO:EO)

分子量

average Mn ~5,800

组成

PEG, 30 wt. %

折射率

n20/D 1.465

表面张力

34 dyn/cm, 25 °C, 0.1 wt. % in H2O

粘度

350 cP(60 °C, Brookfield)(lit.)

转变温度

Tm (DSC) 39 °C (at peak)
cloud point 90 °C (1 wt. % aqueous solution)

密度

1.018 g/mL at 25 °C

HLB

7 - 9

InChI

1S/C3H6O.C2H4O/c1-3-2-4-3;1-2-3-1/h3H,2H2,1H3;1-2H2

InChI key

RVGRUAULSDPKGF-UHFFFAOYSA-N

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相关类别

一般描述

PEG-PPG-PEG（Pluronic P123）对称的三嵌段共聚物由聚（环氧乙烷）（PEO）和聚（环氧丙烷）（PPO）所构成。 PPO嵌段这种在288K以上的温度下具有疏水性、在288K以下的温度下在水中具有溶解性的独特特征，导致了由PEO-PPO-PEO三嵌段共聚物组成的胶束的形成。 一些研究报道称疏水核含有PPO嵌段，而亲水冠是由PEO嵌段组成的。在30wt%的水溶液中Pluronic P123®会形成一种立体的凝胶相。

应用

PEG-PPG-PEG是通过溶胶凝胶技术用于Fe-W-C(O)纳米颗粒制备和涂覆。此外，还用作牺牲性模板用于制备ZnS纳米球，纳米多孔二氧化硅。
软硬表面清洁剂、涂料和水处理中的消泡剂。金属加工润滑剂，线性和交联聚酯及聚氨酯的消泡助剂和增量剂。

特点和优势

性质取决于亲水性 (EO)/疏水性 (PO) 比例的表面活性物质EO 含量越高，水包油稳定剂性能越好。

外形

末端主要是二羟基官能化低聚物。

法律信息

Pluronic is a registered trademark of BASF

WGK

WGK 1

个人防护装备

Eyeshields, Gloves, type N95 (US)

分析证书(COA)

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What is the average molecular weight of Product No. 435465, Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol)?

    While we do not test the product to determine the molecular weight, our supplier reports the average molecular weight to be 5750.

  6. What is the pour point of Product No. 435465, Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol)?

    Our supplier reports the pour point of product 435465 to be 31 °C.

  7. I found an abbreviation of "HLB" on the webpage for Product No. 435465, Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol)?

    HLB is an empirical expression for the relationship of the hydrophilic ("water-loving") and hydrophobic ("water-hating") groups of a surfactant. The table below lists HLB values along with typical performance properties. The higher the HLB value, the more water-soluble the surfactant.

  8. What is the water content of Product No. 435465, Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol),?

    While we do not test the product to determine the water content, our supplier reports the maximum water content allowed in Prouct No. 435465 is 0.4%.

  9. What is the physical form of Product No. 435465, Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) supposed to be?

    The specification sheet describes Product No. 435465 as a semi-solid. It looks like a paste.

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Sol-Gel Derived Fe-Rich Matrix Composites Having Precipitated WC.
Alvarez EA, et al.
Advanced Engineering Materials (2014)
Formation of Nanocrystalline Phases in Sol-gel Masses in the Fe-WC (O) System and Densification up to 1100? C.
Oliver CJR, et al.
Procedia Materials Science, 1, 95-103 (2012)
Facile synthesis of hollow ZnS nanospheres in block copolymer solutions
Ma Y, et al.
Langmuir, 19(9), 4040-4042 (2003)
Hong-Lin Cheng et al.
Lab on a chip, 18(19), 2917-2925 (2018-08-18)
According to World Health Organization reports, cardiovascular diseases (CVDs) are amongst the major causes of death globally and are responsible for over 18 million deaths every year. Traditional detection methods for CVDs include cardiac computerized tomography scans, electrocardiography, and myocardial
Hydrogen Bonding and Transfer in the Excited State, 2 (2011)
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