Effect of Surfactant and Various Salts on Aqueous Solution Properties of Naphthalene-Labeled Poly(hydrochloride-quaternized 2-norbornene-5-methylamine) made by Ring-Opening Metathesis Polymerization (ROMP)

Liaw, Der‐Jang; Huang, Ching-Cheng; Wu, Pi-Ling

doi:10.1002/1521-3935(200211)203:15<2177::aid-macp2177>3.0.co;2-s

Cited by 5 publications

(6 citation statements)

References 30 publications

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“…6(c)]. These behaviors were similar to those of other cationic polymers and polyelectrolytes in aqueous solutions and were due to the polyelectrolyte effect 35–37. In addition, the effect of the temperature range of 20–50 °C on the hydrodynamic diameter of poly 3a at different polymer concentrations was investigated in aqueous salt solutions ([NaCl] = 0.05 g dL −1 ).…”

Section: Resultssupporting

confidence: 61%

“…In the diluted solution region, the macroscopic reduced viscosity and microscopic hydrodynamic diameter of cationic polymers decrease with an increase in the polymer concentration 35–37. In the region of relatively high polymer concentrations, there is no remarkable change in the macroscopic reduced viscosity and microscopic hydrodynamic diameter of the cationic polymeric aggregation and/or micelle 35–37. In this study, there was no remarkable change in the microscopic hydrodynamic diameters of the cationic polymeric aggregation and/or micelle from 0.01 [Fig.…”

Section: Resultsmentioning

confidence: 52%

“…In general, a high macroscopic reduced viscosity and microscopic hydrodynamic diameter of cationic polymers are observed in diluted solutions of cationic polymers 35–37. In the diluted solution region, the macroscopic reduced viscosity and microscopic hydrodynamic diameter of cationic polymers decrease with an increase in the polymer concentration 35–37. In the region of relatively high polymer concentrations, there is no remarkable change in the macroscopic reduced viscosity and microscopic hydrodynamic diameter of the cationic polymeric aggregation and/or micelle 35–37.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Effects of the architecture and environment on polymeric molecular assemblies of novel amphiphilic diblock copolynorbornenes with narrow polydispersity via living ring‐opening metathesis polymerization

Liaw

Huang

Kang

2006

J. Polym. Sci. A Polym. Chem.

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Diblock copolymers of 5-(methylphthalimide)bicyclo[2.2.1]hept-2-ene (NBMPI) and 1,5-cyclooctadiene were synthesized by living ring-opening metathesis polymerization with a well-defined catalyst {RuCl 2 (CHPh)[P(C 6 H 11 ) 3 ] 2 }. Unhydrogenated diblock copolymers showed two glass transitions due to poly(NBMPI) and polybutadiene segments, such as two glass-transition temperatures at À86.5 and 115.3 8C for poly1a and À87.2 and 115.3 8C for poly1b. However, only one melting temperature could be observed for hydrogenated copolymers, such as 119.8 8C for poly2a and 121.7 8C for poly2b. The unhydrogenated diblock copolymer with the longer poly(NBMPI) chain (poly1a; temperature at 10% mass loss ¼ 400 8C) exhibited better thermal stability than the one with the shorter poly(NBMPI) chain (poly1b; temperature at 10% mass loss ¼ 385 8C). Two kinds of hydrogenated diblock copolymers, poly2a and poly2b, exhibited relatively poor solubility but better thermal stability than unhydrogenated diblock copolymers because of the polyethylene segments. Poly[(hydrochloride quaternized 2norbornene-5-methyleneamine)-b-butadiene]-1 (poly3a) was obtained after the hydrolysis and quaternization of poly1a. Dynamic light scattering measurements indicated that the hydrodynamic diameters of the cationic copolymer (poly3a) in water (hydrodynamic diameter ¼ 1580 nm without salt), methanol/water (4/96 v/v; hydrodynamic diameter¼ 1500 nm without salt), and tetrahydrofuran/water (4/96 v/v; hydrodynamic diameter¼ 1200 nm without salt) decreased with increasing salt (NaCl) concentration. The effect of temperature on the hydrodynamic diameter of hydrophobically modified poly3a was also studied. The inflection point of the hydrodynamic diameter of poly3a was observed at various polymer concentrations around 30 8C. The critical micelle concentration of hydrophobically modified poly3a was observed at 0.018 g dL À1 .

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Section: Resultssupporting

confidence: 61%

Section: Resultsmentioning

confidence: 52%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Effects of the architecture and environment on polymeric molecular assemblies of novel amphiphilic diblock copolynorbornenes with narrow polydispersity via living ring‐opening metathesis polymerization

Liaw

Huang

Kang

2006

J. Polym. Sci. A Polym. Chem.

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“…ROMP is a highly functional group tolerant polymerization technique, which can synthesize polymers with controlled architectures. ,− While ROMP of charged metal complexes such as ferrocene ,− and in ionic liquids has been carried out, there are only few reports of polymerizing charged monomers. − The vast majority of reports utilize postpolymerization modifications to yield polyelectrolytes. − However, such postpolymerization modifications can involve side reactions such as hydrolysis, chain degradation, or cross-linking, thereby leading to ill-defined structures . By directly copolymerizing a charged monomer, postpolymerization steps can be avoided, giving a straightforward and robust method to make functional materials such as ionomers and polyelectrolytes.…”

Section: Introductionmentioning

confidence: 99%

Noncovalently Functionalized Poly(norbornene)s Possessing both Hydrogen Bonding and Coulombic Interactions

Nair

Weck

2006

Macromolecules

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Random copolymers containing both hydrogen bonding and charged ionic sites have been synthesized by the ring-opening metathesis polymerization of norbornene monomers containing either an ionic quaternary ammonium group or a 2,6-diaminopyridine functionality. All copolymers were functionalized subsequently via self-assembly using hydrogen bonding and Coulombic interactions. The hydrogen bonding interactions between 2,6-diaminopyridine and N-butylthymine were studied in the presence of the ionic quaternary ammonium group and its subsequent self-assembly with three different charged anionic species to investigate the influence of the Coulombic interactions on the strength of hydrogen bonding. It was found that hydrogen bonding was independent of the nature and presence of the Coulombic interactions. These results prove that the studied hydrogen bonding interactions are orthogonal to the Coulombic interactions and that both interactions can be used independently of each other in the same system to noncovalently functionalize polymer backbones.

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Synthesis and solution property of acrylamide-sulfobetaine copolymers

Song

Zheng

2014

Colloid Polym Sci

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A b s t r a c t S u l f o b e t a i n e 3 -[ N , N -d i m e t h y l -N -( 2 -methacryloxylethyl)ammonio]-propane sulfonate (DMAPS) was used to copolymerize with acrylamide (AM) to prepare salt-sensitive copolymers. The optimal reaction conditions, such as initiator concentration, temperature, and reaction time, to achieve the largest weight averaged molecular weight (M w ) and the lowest polydispersity index (PDI) were studied. The reactivity ratios of AM and DMAPS (r 1 , r 2 ) were calculated to be (0.45, 0.84) by the Fineman-Ross method, and (0.47, 0.91) by the Kelen-Tüdös method. The Q-e values of DMAPS were calculated to be (0.30, −0.38). DMAPS was found to be more easily to add into the copolymer than AM to form random copolymers with a slight alternating tendency. Solution rheology and molecular size of the copolymers as a function of M w were studied in 1 M NaCl solution, a near θ-solution, by rotational rheometer and light scattering methods, respectively. Undisturbed dimension of the copolymers was evaluated according to Stockmayer-Fixman relation.

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Effect of Surfactant and Various Salts on Aqueous Solution Properties of Naphthalene-Labeled Poly(hydrochloride-quaternized 2-norbornene-5-methylamine) made by Ring-Opening Metathesis Polymerization (ROMP)

Cited by 5 publications

References 30 publications

Effects of the architecture and environment on polymeric molecular assemblies of novel amphiphilic diblock copolynorbornenes with narrow polydispersity via living ring‐opening metathesis polymerization

Effects of the architecture and environment on polymeric molecular assemblies of novel amphiphilic diblock copolynorbornenes with narrow polydispersity via living ring‐opening metathesis polymerization

Noncovalently Functionalized Poly(norbornene)s Possessing both Hydrogen Bonding and Coulombic Interactions

Synthesis and solution property of acrylamide-sulfobetaine copolymers

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