Solution behavior of star polymers with oligo(ethylene glycol) methyl ether methacrylate arms

Kowalczuk, Agnieszka; Mendrek, Barbara; Żymełka-Miara, Iwona; Libera, Marcin; Marcinkowski, Andrzej; Trzebicka, Barbara; Smet, Mario; Dworak, Andrzej

doi:10.1016/j.polymer.2012.10.022

Cited by 24 publications

(31 citation statements)

References 60 publications

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“…Similar results were obtained in our earlier reports for other star polymers with polymethacrylate arms and poly(arylene oxindole) cores [34,41,42].…”

Section: Synthesis Of the Star Polymers With Dmaema Armssupporting

confidence: 92%

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Polycationic star polymers with hyperbranched cores for gene delivery

Mendrek

Sieroń

Libera

et al. 2014

Polymer

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Core-shell type stars synthesized via atom transfer radical polymerization were used for the delivery of nucleic acids. The interior of the stars consisted of hyperbranched poly(arylene oxindole), while the arms were composed of poly(N,N-dimethylaminoethyl methacrylate).The length of the star arms varied in degree of polymerization (DP) from 14 to 98. The hydrodynamic radius of the structures measured in water indicated the presence of small aggregates, while isolated stars ranging in size from 14 to 29 nm were seen in organic solvent.The phase transition temperatures of the stars in water, measured in basic conditions, were shifted to lower values with increasing DP of the arms. Stable polyplexes of stars with plasmid DNA were formed. Their size varied from 300 nm to 400 nm, depending upon the DP of arms. The zeta potential of the polyplexes was positive, which facilitated their cellular uptake. The DP of the arms influenced the transfection efficiency of HT-1080 cells, demonstrating that stars are promising candidates for synthetic gene vectors.

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“…Similar results were obtained in our earlier reports for other star polymers with polymethacrylate arms and poly(arylene oxindole) cores [34,41,42].…”

Section: Synthesis Of the Star Polymers With Dmaema Armssupporting

confidence: 92%

“…The hydrolysis conditions were chosen to cleave only the ester linkages between the core and the arms and to preserve the polymethacrylic backbone. This type of reaction has been successfully used previously for different types of star polymers [37][38][39][40][41][42].…”

Section: Synthesis Of the Star Polymers With Dmaema Armsmentioning

confidence: 99%

Polycationic star polymers with hyperbranched cores for gene delivery

Mendrek

Sieroń

Libera

et al. 2014

Polymer

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“…One of the reasons for the observed behavior of light scattering is the growth of both radii of the middle and large aggregates (Fig. 5) which is often observed for thermosensitive stars [6,7,9,[12][13][14]. Secondly, the composition of the scattering particles changes, namely, the aggregate fraction rises at the expense of the fast mode particles.…”

Section: Temperature Dependences Of Piprox 4 -S Solution Characteristicsmentioning

confidence: 92%

“…Twenty-armed stars with copolymer poly[di ethylene glycol) methyl ether methacrylate-ran-oligo (ethylene glycol) methyl ether methacrylate] arms, with similar arm composition and significant difference in N arm (96 and 166), display the same cloud point temperatures T CP , namely, 33 and 34°C [6]. The authors analyzed the dimensions of particles in solutions in order to find out arm length influence on solution behavior.…”

Section: Partialmentioning

confidence: 99%

“…The significance of concentration effect is confirmed by numerous investigations of linear thermosensitive polymers as well as data for star-shaped systems. In particular, T CP decreases with dilution in low concentration region (for example, [6,9,11]). An influence of arm length on composition and dimensions of particles in solution is not clear as well as their changing on heating.…”

Section: Partialmentioning

confidence: 99%

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Influence of arm length on aqueous solution behavior of thermosensitive poly(2-isopropyl-2-oxazoline) stars

et al. 2016

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Four-arm star-shaped poly(2-isopropyl-2-oxazoline) (PiPrOx 4 -S) with short arms was studied by turbidimetry and light scattering in aqueous solutions at concentrations ranging from 0.00024 to 0.0326 g cm −3 . The molar mass M of the sample investigated was 5700 g mol −1 . In order to reveal the influence of arm length on solution properties, the results obtained for PiPrOx 4 -S were compared with the characteristics of four-arm star PiPrOx 4 -L with long arms and M = 13,000 g mol −1 . Arm shortening leads to appearance of the new type of particles and growth of the aggregation number. Stronger concentration dependences of phase transition temperatures and double widening of this interval are observed for PiPrOx 4 -S as compared to long-arm star. It is shown that arm lengthening causes more remarkable changes in solution behavior than the variation of arm number.

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Polymers dynamics of the nonfluoro, nano‐brush repelling agent with self‐stratifying property in water‐based coatings

Tang

Huang

et al. 2019

J of Applied Polymer Sci

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While perfluoroalkyl acids (PFAAs), also known as C8s, are used extensively in textile repellent coatings, concerns have arisen for their carcinogenicity and hazardous effects on the environment. In this study, a novel water‐based, nonfluoro, and nanobrush textile repelling agent was prepared by conventional sol–gel chemistry using amorphous fumed silica and n‐octyltriethoxysilane as the starting materials. Minimal interaction between the designed repelling agent and marketed water‐based resins was confirmed using linear viscosity region (LVR) analysis and asymmetric‐flow field‐flow fractionation (AF4), suggesting the self‐stratification potential of the repelling agent. More specifically, the repelling agent exhibited excellent compatibility and self‐stratifying ability with a force‐emulsified acrylic‐based resin, affording a water contact angle of 104.3° when incorporated at 7% solid content. Performance tests carried out on thermoplastic polyurethane (TPU) revealed excellent adhesion (100/100) of a final formulation, and a significant increase in water contact angle from 80.1° to 103.8° after treatment. In addition, the fouling area after the removal of a submerged sample from a mixture of slurry, polymer, and oil decreased from 48 to 1% when the repelling agent was added. Moreover, the sludge‐fouling property remained unchanged after 1000 cycles of abrasion. These findings demonstrate the potential of the described nonfluoro, nanobrush repelling agent as an environmentally safe alternative for use with commercial resins, in turn realizing a fully water‐based hydrophobic coating. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48003.

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Solution behavior of star polymers with oligo(ethylene glycol) methyl ether methacrylate arms

Cited by 24 publications

References 60 publications

Polycationic star polymers with hyperbranched cores for gene delivery

Polycationic star polymers with hyperbranched cores for gene delivery

Influence of arm length on aqueous solution behavior of thermosensitive poly(2-isopropyl-2-oxazoline) stars

Polymers dynamics of the nonfluoro, nano‐brush repelling agent with self‐stratifying property in water‐based coatings

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