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Smart Assembly Behaviors of Hydroxypropylcellulose-graft-poly(4-vinyl pyridine) Copolymers in Aqueous Solution by Thermo and pH Stimuli
Ma, Lin1,2; Kang, Hongliang1; Liu, Ruigang1; Huang, Yong1,3
2010-12-07
Source PublicationLANGMUIR
ISSN0743-7463
Volume26Issue:23Pages:18519-18525
AbstractThermo- and pH-sensitive graft copolymers, hydroxypropylcellulose-graft-poly(4-vinyl pyridine) (HPC-g-P4VP), were synthesized via atom transfer radical polymerization (ATRP) and characterized. The thermo- and pH-induced micellization and stimuli-responsive properties of HPC-g-P4VP graft copolymers in aqueous solution were investigated by transmittance, H-1 NMR, dynamic light scattering (DLS), and so on. For the pH-induced micellization, the P4VP side chains collapse to form the core of the micelles, and the H PC backbones stay in the shell to stabilize the micelles. In the case of thermoinduced micellization, the HPC backbones collapse to form the core of the micelles that was stabilized by the P4VP side chains in the shell upon heating. What's more, the cloud point of the HPC-g-P4VP copolymers in the aqueous solution could be finely tuned by changing the length of P4VP side chains or the pH values. In acidic water, the longer the side chains, the higher the cloud point. For those HPC-g-P4VP copolymers with short side chains, for example, HPC0.05-g-P4VP(3), the lower pH correlates a higher cloud point. The thermo- or pH-induced micelles also have the pH- or thermosensitivity due to their P4VP or HPC shells.
DOI10.1021/la103854b
Indexed BySCI
Language英语
WOS IDWOS:000284732300103
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:55[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/69846
Collection中国科学院化学研究所
Corresponding AuthorLiu, Ruigang
Affiliation1.Chinese Acad Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
3.Chinese Acad Sci, Natl Engn Res Ctr Plast, Tech Inst Phys & Chem, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Ma, Lin,Kang, Hongliang,Liu, Ruigang,et al. Smart Assembly Behaviors of Hydroxypropylcellulose-graft-poly(4-vinyl pyridine) Copolymers in Aqueous Solution by Thermo and pH Stimuli[J]. LANGMUIR,2010,26(23):18519-18525.
APA Ma, Lin,Kang, Hongliang,Liu, Ruigang,&Huang, Yong.(2010).Smart Assembly Behaviors of Hydroxypropylcellulose-graft-poly(4-vinyl pyridine) Copolymers in Aqueous Solution by Thermo and pH Stimuli.LANGMUIR,26(23),18519-18525.
MLA Ma, Lin,et al."Smart Assembly Behaviors of Hydroxypropylcellulose-graft-poly(4-vinyl pyridine) Copolymers in Aqueous Solution by Thermo and pH Stimuli".LANGMUIR 26.23(2010):18519-18525.
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