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From corresponding states in water - CO2 - F(CF2)iC2H4Ej microemulsions towards
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所在地：South East, 英國
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- ISBN
- 9783736970311
- EAN
- 9783736970311
- Book Title
- From Corresponding States in Water - CO2 - F(CF2)iC2H4Ej Microemulsions Towards Foamable Nanostructured CO2-In-polyol Systems
- Item Length
- 8.3 in
- Publisher
- Cuvillier Verlag
- Publication Year
- 2019
- Format
- Trade Paperback
- Language
- English
- Item Height
- 0.5 in
- Genre
- Science
- Topic
- Chemistry / Physical & Theoretical
- Item Width
- 5.8 in
- Item Weight
- 9.8 Oz
- Number of Pages
- 226 Pages
關於產品
Product Information
Today there is an increased focus on a considerable reduction of the total energy consumption in the world. As the heating of buildings constitutes a large part of this consumption, the development of highly efficient thermal insulation materials is highly demanded. The most promising class are polymeric nanofoams, which might be producible by using the "Principle Of Supercritical Microemulsion Expansion" (POSME). Within this approach, microemulsions with a high number density of CO2 nano-pools in a polymerizable material (e.g. polyol) are used as templates. Adjusting supercritical conditions, the nucleation of gaseous CO2 during the expansion is avoided, so that each CO2-swollen micelle should ideally grow to a nanopore. However, due to aging phenomena, so far only polyurethane (PU) foams with microcellular pores could be produced applying this approach. In order to improve the properties of the foamable microemulsion template, microemulsions of the type water - CO2 - non-ionic fluorinated surfactant (Capstone(R) FS-3100) were studied in the first part of this thesis as a model system. Small angle neutron scattering (SANS) measurements for the first time revealed the phase inversion from CO2-swollen micelles in water via bicontinuous structures to water-swollen micelles in CO2. Using a scaling description developed for microemulsions of the type water -alkane - CiEj, the temperature dependence of the length scales found in classical and CO2-microemulsions fall on top of each other. Moreover, the partial replacement of CO2 by cyclohexane was found to increase the efficiency of the fluorinated surfactant to form a bicontinuous microemulsion. This efficiency boosting could be correlated with the increase of the bending rigidities 0, SANS and NSE determined by SANS and neutron spin echo (NSE). In the second part of this thesis the gained knowledge was successfully used to formulate CO2-in-polyol microemulsions appropriate for the production of nanocellular PU foams. Usi
Product Identifiers
Publisher
Cuvillier Verlag
ISBN-10
3736970315
ISBN-13
9783736970311
eBay Product ID (ePID)
10038562716
Product Key Features
Book Title
From Corresponding States in Water - CO2 - F(CF2)iC2H4Ej Microemulsions Towards Foamable Nanostructured CO2-In-polyol Systems
Format
Trade Paperback
Language
English
Topic
Chemistry / Physical & Theoretical
Publication Year
2019
Genre
Science
Number of Pages
226 Pages
Dimensions
Item Length
8.3 in
Item Height
0.5 in
Item Width
5.8 in
Item Weight
9.8 Oz
Additional Product Features
Target Audience
Trade
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增值稅識別編號：
- GB 724498118
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物品所在地：
South East, 英國
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