Please wait, while we are loading the content...
| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Pei, Xiaomei Wei, Xilian You, Yi Zhao, Jianxi Ye, Yizhang |
| Copyright Year | 2011 |
| Abstract | The viscoelastic properties of the wormlike micellar solutions of 2-hydroxyl-propanediyl-α,ω-bis(dimethyldodecylammonium bromide) and 2-hydroxyl-propanediyl-α,ω-bis(dimethyltetradecylammonium bromide), abbreviated as 12-3(OH)-12 and 14-3(OH)-14, respectively, have been investigated using steady state and frequency sweep rheological measurements. For comparison, the wormlike micellar solutions of propanediyl-α,ω-bis(dimethyldodecylammonium bromide) (referred to as 12-3-12) were also examined on an identical level. Steady state rheological measurements revealed that at low concentrations, the zero-shear viscosity of the 12-3(OH)-12 system was far higher than that of the 12-3-12 system. From dynamic rheological data, the characteristic parameters were drawn out using the Maxwell fluid model and the viscoelastic rheological behavior was discussed according to the living polymer model proposed by Cates et al. The results showed that 12-3(OH)-12 formed longer wormlike micelles than 12-3-12. With increasing the alkyl tail length, 14-3(OH)-14 produced higher viscoelasticity than 12-3(OH)-12 and even formed a gel-like solid at 50 mmol L−1. These were attributed to the role of the intermolecular hydrogen bonding which occurred between the hydroxyl substituted spacers of m-3(OH)-m, where m represents the number of carbon atoms in the alkyl tail. Increase of the alkyl tail length was favorable for enhancement of the hydrogen bonding interaction and thus greatly promoted the micellar growth. |
| Starting Page | 2953 |
| Ending Page | 2960 |
| Page Count | 8 |
| File Format | HTM / HTML PDF |
| ISSN | 1744683X |
| Volume Number | 7 |
| Issue Number | 6 |
| Journal | Soft Matter |
| DOI | 10.1039/c0sm01071e |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Viscoelasticity Viscosity Bromine Rheology Micelle Polymer Carbon Hydroxy group Alkyl Cates Micellar solutions James Clerk Maxwell Hydrogen bond |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Condensed Matter Physics |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|