435465

Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol)

average M_n ~5,800

• 동의어(들): Pluronic^® P-123, PEG-PPG-PEG
• CAS Number: 9003-11-6
• MDL number: MFCD00082049
• UNSPSC 코드: 12352104
• PubChem Substance ID: 24867236
• NACRES: NA.23

속성

• vapor density: >1 (vs air)
• Quality Level: 100
• vapor pressure: <0.3 mmHg ( 20 °C)
• 형태: solid
• 피드(feed) 비율: 20:70:20 (EO:PO:EO)
• 분자량: average M_n ~5,800
• 구성: PEG, 30 wt. %
• refractive index: n20/D 1.465
• 표면장력: 34 dyn/cm, 25 °C, 0.1 wt. % in H₂O
• 점도: 350 cP(60 °C, Brookfield)(lit.)
• 전이 온도: T_m (DSC) 39 °C (at peak); cloud point 90 °C (1 wt. % aqueous solution)
• density: 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

설명

일반 설명

PEG-PPG-PEG (Pluronic P123) symmetric triblock copolymer constitutes of poly(ethylene oxide)(PEO) and poly (propylene oxide) (PPO). The unique characteristic of PPO block exhibiting hydrophobicity at temperatures above 288K and solubility in water at temperatures below 288K lead to formation of micelle consisting of PEO-PPO-PEO triblock copolymers. Some studies report that the hydrophobic core contains PPO block and a hydrophilic corona is comprised of PEO block. In 30wt% aqueous solution Pluronic P123^® forms a cubic gel phase.

애플리케이션

Hard and soft surface cleaners, defoamers in coatings and water treatment. Lubricant in metal working, anti-foaming aid and extender for linear and cross-linked polyesters and polyurethanes.

PEG-PPG-PEG is used in the preparation and coating of Fe-W-C(O) nanoparticles by sol gel technique. Also, employed as sacrificial templates to prepare ZnS nanospheres, nanoporous silica.

특징 및 장점

Surface active material whose properties are dependent on the hydrophilic (EO)/hydrophobic (PO) ratio. High EO content gives better o/w stabilizers.

물리적 형태

Terminal primary dihydroxy-functional oligomer.

법적 정보

Pluronic is a registered trademark of BASF

안전성 정보

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• 개인 보호 장비: Eyeshields, Gloves, type N95 (US)