Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"poly(N-isopropylacrylamide) (pNIPAAm)"”.
-
The preparation and characterization of thermo-sensitive colored hydrogel film and surfactant-free porous polystyrene three-dimensional network.
Polymer hydrogel films change their properties in response to environmental change. This remarkable phenomenon results in many potential applications of polymer hydrogel films. In this thesis colored thermo-sensitive poly(N-isopropylacrylamide) (PNIPAAm) hydrogel film was prepared by firstly …
-
Self-assembling biomimetic hydrogels with bioadhesive properties for tissue engineering applications
… of this work is to generate a bioadhesive polymer that, in addition to bonding with tissue, can support encapsulated cell survival post-adhesion. Thermosensitive poly(N-isopropylacrylamide) (PNIPAAm) was grafted with chondroitin sulfate (CS) (PNIPAAm-g-CS) and blended with aldehyde-modified …
-
Towards greener stationary phases : thermoresponsive and carbonaceous chromatographic supports
Polymers which are sensitive towards external physical, chemical and electrical stimuli are termed as ‘intelligent materials’ and are widely used in medical and engineering applications. Presently, polymers which can undergo a physical change when heat is applied at a certain temperature (cloud …
-
Synthesis and characterization of tethered poly(n-isopropylacrylamide) for quantitative cell adhesion studies
Environmentally responsive (or smart') polymers represent a new approach for controlling biofouling release. Poly(N-isopropylacrylamide) (PNIPAAm) is a thermo responsive polymer that can potentially be used to control biofouling, as it exhibits a change in its relative hydrophobicity above and …
-
Single molecule tracking studies of lower critical solution temperature transition behavior in poly(N-isopropylacrylamide)
… single molecule tracking, SMT, experiments in poly(n-isopropylacrylamide, pNIPAAm, were carried out using probe fluorophores that had partitioned into the polymer. When the pNIPAAm switches from expanded to collapsed at elevated temperatures, the free volume accessible to the diffusing …
-
Bioadhesion to model thermally responsive surfaces
… glycol) and alkyl thiolates (mixed SAM) and poly(N-isopropylacrylamide) (PNIPAAm). The synthesis of hexa(ethylene gylcol) alkyl thiol (C11EG6OH) is presented along with the mass spectrometry and nuclear magnetic resonance results. The mixed SAM surface was confirmed to be thermally responsive …
-
Developing Stimulated Raman Spectroscopic Techniques For Imaging Below the Optical Diffraction Limit
… scanning a thin film of a carborane-terminated poly(N-isopropylacrylamide) (pNIPAAm), we show that their high density of B-H bonds and their unique vibrational frequency in the cell silent region make carboranes useful Raman imaging tags that expand multiplexing options. Carboranes’ role as …
-
Self assembled transmembrane protein polymer conjugates for the generation of nano thin membranes and micro compartments
… formed by crosslinking of transmembrane protein polymer conjugates. The conjugates were self assembled on air water interface and the polymer chains crosslinked using a UV crosslinkable comonomer to engender the membrane. The protein used for the studies reported herein was one of the largest …
-
Self-assembly of cross-linked polymer micelles into complex higher-order aggregates
The creation of complex polymer structures has been one of the major research topics over the last couple of decades. This work deals with the synthesis of (block co-)polymers, the creation of complex and stimuli-responsive aggregates by self-assembly, and the cross-linking of these structures. …
-
Synthesis of reponsive homo- and block copolymers - application to the generation of inorganic-organic nanohybrids
Responsive homopolymers and multi-responsive block copolymers were prepared via reversible addition-fragmentation chain transfer (RAFT) and atom transfer radical polymerization (ATRP). Self-assembly in solution depending on environmental stimuli was investigated and exploited to create responsive …
-
Janus Particles at Interfaces
… the synthesis and the characterization of both polymeric and hybrid Janus particles of well-defined size, shape and functionality and their high potential for applications in colloidal and material science. Soft Janus particles, based on polystyrene-block-polybutadiene-block-poly(methyl …