Effects of temperature and salt addition on the association behavior of charged amphiphilic diblock copolymers in aqueous solution.
作者： Solmaz Bayati , Kaizheng Zhu , Loan T. T. Trinh , Anna-Lena Kjøniksen , Bo Nyström
DOI: 10.1021/JP306833X
关键词:
摘要: Effects of temperature on the association behavior in aqueous solutions a series charged thermoresponsive poly(N-isopropylacrylamide)-block-poly((3-acrylamidopropyl) trimethylammonium chloride) (abbreviated as PNIPAAMn-b-PAMPTMA(+)20) with different lengths PNIPAAM block (n = 24, 48, and 65) have been studied aid turbidimetry, zeta sizer, dynamic light scattering (DLS). The turbidity results show that transition to high values is shifted lower temperatures when length increases. It was observed value cloud point (CP) dropped increasing polymer concentration, enlarged block, augmented salinity. found decay correlation function from DLS bimodal at well below CP, where fast mode represents motion unimers slow dynamics micelles/intermicellar complexes. At higher temperatures, larger particles system grow ex...
acs.org
sci-hub.se 参考文章(53)
Anna-Lena Kjøniksen, Bo Nyström, Heikki Tenhu, Characterisation of thermally controlled chain association in aqueous solutions of poly(N-isopropyl acrylamide)-g-poly(ethylene oxide): Dynamic light scattering Colloids and Surfaces A: Physicochemical and Engineering Aspects. ,vol. 228, pp. 75- 83 ,(2003) , 10.1016/S0927-7757(03)00419-9
Block Copolymers in Nanoscience Block Copolymers in Nanoscience. pp. 1- 428 ,(2006) , 10.1002/9783527610570
Cheng-Shu Chaw, Kar-Wai Chooi, Xue-Ming Liu, Cherng-wen Tan, Lin Wang, Yi-Yan Yang, Thermally responsive core-shell nanoparticles self-assembled from cholesteryl end-capped and grafted polyacrylamides:; drug incorporation and in vitro release. Biomaterials. ,vol. 25, pp. 4297- 4308 ,(2004) , 10.1016/J.BIOMATERIALS.2003.10.095
Anna-Lena Kjøniksen, Kaizheng Zhu, Ramón Pamies, Bo Nyström, Temperature-Induced Formation and Contraction of Micelle-Like Aggregates in Aqueous Solutions of Thermoresponsive Short-Chain Copolymers Journal of Physical Chemistry B. ,vol. 112, pp. 3294- 3299 ,(2008) , 10.1021/JP800404A
Andra Dedinaite, Esben Thormann, Geoffrey Olanya, Per M. Claesson, Bo Nyström, Anna-Lena Kjøniksen, Kaizheng Zhu, Friction in aqueous media tuned by temperature-responsive polymer layers Soft Matter. ,vol. 6, pp. 2489- 2498 ,(2010) , 10.1039/C003320K
Stephan Förster, Markus Antonietti, Amphiphilic Block Copolymers in Structure-Controlled Nanomaterial Hybrids Advanced Materials. ,vol. 10, pp. 195- 217 ,(1998) , 10.1002/(SICI)1521-4095(199802)10:3<195::AID-ADMA195>3.0.CO;2-V
J RODRIGUEZHERNANDEZ, F CHECOT, Y GNANOU, S LECOMMANDOUX, Toward ‘smart’ nano-objects by self-assembly of block copolymers in solution Progress in Polymer Science. ,vol. 30, pp. 691- 724 ,(2005) , 10.1016/J.PROGPOLYMSCI.2005.04.002
Clinton D. Jones, L. Andrew Lyon, Shell-Restricted Swelling and Core Compression in Poly(N-isopropylacrylamide) Core−Shell Microgels Macromolecules. ,vol. 36, pp. 1988- 1993 ,(2003) , 10.1021/MA021079Q
Ramón Pamies, Kaizheng Zhu, Sondre Volden, Anna-Lena Kjøniksen, Göran Karlsson, Wilhelm R. Glomm, Bo Nyström, Temperature-Induced Flocculation of Gold Particles with an Adsorbed Thermoresponsive Cationic Copolymer Journal of Physical Chemistry C. ,vol. 114, pp. 21960- 21968 ,(2010) , 10.1021/JP106520K
Gunnar Karlstroem, A new model for upper and lower critical solution temperatures in poly(ethylene oxide) solutions The Journal of Physical Chemistry. ,vol. 89, pp. 4962- 4964 ,(1985) , 10.1021/J100269A015