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Polymerization induced self-assembly: tuning of morphology using ionic strength and pH
Investigations of RAFT dispersion polymerization-induced self-assembly (PISA) of 2-hydroxypropyl methacrylate (HPMA) in water/methanol at 60 °C using a cationically charged macroRAFT agent as the stabilizer block, namely P( N , N -diethylaminoethyl methacrylate)- stat -poly((ethylene glycol) methyl...
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Published in: | Polymer chemistry 2017-05, Vol.8 (20), p.3082-3089 |
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cites | cdi_FETCH-LOGICAL-c366t-a5f9f6fa9b5b62a78d214f1664cff27572d3b5a1b8fc6c3a1f72ff9b49b8f0073 |
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container_issue | 20 |
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container_title | Polymer chemistry |
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creator | Zhou, Dewen Dong, Siming Kuchel, Rhiannon P. Perrier, Sebastien Zetterlund, Per B. |
description | Investigations of RAFT dispersion polymerization-induced self-assembly (PISA) of 2-hydroxypropyl methacrylate (HPMA) in water/methanol at 60 °C using a cationically charged macroRAFT agent as the stabilizer block, namely P(
N
,
N
-diethylaminoethyl methacrylate)-
stat
-poly((ethylene glycol) methyl ether methacrylate) (PDEAEMA-
stat
-PEGMA), have been conducted with a view to tune particle morphologies by manipulation of the pH and the ionic strength. Above the LCST (45 °C) of (PDEAEMA-
stat
-PEGMA), the system can only be conducted as a dispersion polymerization at sufficiently low pH such that the stabilizer block is sufficiently protonated to ensure solubility in the continuous phase. It is demonstrated (reported in the form of an extensive morphology diagram) that a range of morphologies including spherical particles, rods and vesicles can be accessed by adjustment of the pH (
via
addition of HCl) and the ionic strength (
via
the concentration of NaCl). A decrease in the charge density of the coronal stabilizer layer
via
an increase in the pH (less protonation) shifts the system towards higher order morphologies. At a given pH, an increase in ionic strength leads to more extensive charge screening, thus allowing formation of higher order morphologies. |
doi_str_mv | 10.1039/C7PY00552K |
format | article |
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N
,
N
-diethylaminoethyl methacrylate)-
stat
-poly((ethylene glycol) methyl ether methacrylate) (PDEAEMA-
stat
-PEGMA), have been conducted with a view to tune particle morphologies by manipulation of the pH and the ionic strength. Above the LCST (45 °C) of (PDEAEMA-
stat
-PEGMA), the system can only be conducted as a dispersion polymerization at sufficiently low pH such that the stabilizer block is sufficiently protonated to ensure solubility in the continuous phase. It is demonstrated (reported in the form of an extensive morphology diagram) that a range of morphologies including spherical particles, rods and vesicles can be accessed by adjustment of the pH (
via
addition of HCl) and the ionic strength (
via
the concentration of NaCl). A decrease in the charge density of the coronal stabilizer layer
via
an increase in the pH (less protonation) shifts the system towards higher order morphologies. At a given pH, an increase in ionic strength leads to more extensive charge screening, thus allowing formation of higher order morphologies.</description><identifier>ISSN: 1759-9954</identifier><identifier>EISSN: 1759-9962</identifier><identifier>DOI: 10.1039/C7PY00552K</identifier><language>eng</language><subject>Charged particles ; Dispersions ; Methyl alcohol ; Morphology ; Polymerization ; Self assembly ; Strength</subject><ispartof>Polymer chemistry, 2017-05, Vol.8 (20), p.3082-3089</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c366t-a5f9f6fa9b5b62a78d214f1664cff27572d3b5a1b8fc6c3a1f72ff9b49b8f0073</citedby><cites>FETCH-LOGICAL-c366t-a5f9f6fa9b5b62a78d214f1664cff27572d3b5a1b8fc6c3a1f72ff9b49b8f0073</cites><orcidid>0000-0001-5055-9046 ; 0000-0003-3149-4464</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Zhou, Dewen</creatorcontrib><creatorcontrib>Dong, Siming</creatorcontrib><creatorcontrib>Kuchel, Rhiannon P.</creatorcontrib><creatorcontrib>Perrier, Sebastien</creatorcontrib><creatorcontrib>Zetterlund, Per B.</creatorcontrib><title>Polymerization induced self-assembly: tuning of morphology using ionic strength and pH</title><title>Polymer chemistry</title><description>Investigations of RAFT dispersion polymerization-induced self-assembly (PISA) of 2-hydroxypropyl methacrylate (HPMA) in water/methanol at 60 °C using a cationically charged macroRAFT agent as the stabilizer block, namely P(
N
,
N
-diethylaminoethyl methacrylate)-
stat
-poly((ethylene glycol) methyl ether methacrylate) (PDEAEMA-
stat
-PEGMA), have been conducted with a view to tune particle morphologies by manipulation of the pH and the ionic strength. Above the LCST (45 °C) of (PDEAEMA-
stat
-PEGMA), the system can only be conducted as a dispersion polymerization at sufficiently low pH such that the stabilizer block is sufficiently protonated to ensure solubility in the continuous phase. It is demonstrated (reported in the form of an extensive morphology diagram) that a range of morphologies including spherical particles, rods and vesicles can be accessed by adjustment of the pH (
via
addition of HCl) and the ionic strength (
via
the concentration of NaCl). A decrease in the charge density of the coronal stabilizer layer
via
an increase in the pH (less protonation) shifts the system towards higher order morphologies. At a given pH, an increase in ionic strength leads to more extensive charge screening, thus allowing formation of higher order morphologies.</description><subject>Charged particles</subject><subject>Dispersions</subject><subject>Methyl alcohol</subject><subject>Morphology</subject><subject>Polymerization</subject><subject>Self assembly</subject><subject>Strength</subject><issn>1759-9954</issn><issn>1759-9962</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNpFUMtKAzEADKJgqb34BTmKsJrHJmm8SdFWLNiDCp6WbDZpI9lkTXYP69fbUtG5zDDMzGEAuMToBiMqbxdi84EQY-T5BEywYLKQkpPTP83KczDL-RPtQXFJKJ-A9030Y2uS-1a9iwG60AzaNDAbbwuVs2lrP97BfggubGG0sI2p20UftyMc8sHbt5yGuU8mbPsdVKGB3eoCnFnls5n98hS8PT68LlbF-mX5tLhfF5py3heKWWm5VbJmNSdKzBuCS4s5L7W1RDBBGlozheu51VxTha0g1sq6lHsHIUGn4Oq426X4NZjcV63L2nivgolDrrDEjJKSkEP0-hjVKeacjK265FqVxgqj6vBf9f8f_QF89WPY</recordid><startdate>20170528</startdate><enddate>20170528</enddate><creator>Zhou, Dewen</creator><creator>Dong, Siming</creator><creator>Kuchel, Rhiannon P.</creator><creator>Perrier, Sebastien</creator><creator>Zetterlund, Per B.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0001-5055-9046</orcidid><orcidid>https://orcid.org/0000-0003-3149-4464</orcidid></search><sort><creationdate>20170528</creationdate><title>Polymerization induced self-assembly: tuning of morphology using ionic strength and pH</title><author>Zhou, Dewen ; Dong, Siming ; Kuchel, Rhiannon P. ; Perrier, Sebastien ; Zetterlund, Per B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c366t-a5f9f6fa9b5b62a78d214f1664cff27572d3b5a1b8fc6c3a1f72ff9b49b8f0073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Charged particles</topic><topic>Dispersions</topic><topic>Methyl alcohol</topic><topic>Morphology</topic><topic>Polymerization</topic><topic>Self assembly</topic><topic>Strength</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhou, Dewen</creatorcontrib><creatorcontrib>Dong, Siming</creatorcontrib><creatorcontrib>Kuchel, Rhiannon P.</creatorcontrib><creatorcontrib>Perrier, Sebastien</creatorcontrib><creatorcontrib>Zetterlund, Per B.</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Polymer chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhou, Dewen</au><au>Dong, Siming</au><au>Kuchel, Rhiannon P.</au><au>Perrier, Sebastien</au><au>Zetterlund, Per B.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Polymerization induced self-assembly: tuning of morphology using ionic strength and pH</atitle><jtitle>Polymer chemistry</jtitle><date>2017-05-28</date><risdate>2017</risdate><volume>8</volume><issue>20</issue><spage>3082</spage><epage>3089</epage><pages>3082-3089</pages><issn>1759-9954</issn><eissn>1759-9962</eissn><abstract>Investigations of RAFT dispersion polymerization-induced self-assembly (PISA) of 2-hydroxypropyl methacrylate (HPMA) in water/methanol at 60 °C using a cationically charged macroRAFT agent as the stabilizer block, namely P(
N
,
N
-diethylaminoethyl methacrylate)-
stat
-poly((ethylene glycol) methyl ether methacrylate) (PDEAEMA-
stat
-PEGMA), have been conducted with a view to tune particle morphologies by manipulation of the pH and the ionic strength. Above the LCST (45 °C) of (PDEAEMA-
stat
-PEGMA), the system can only be conducted as a dispersion polymerization at sufficiently low pH such that the stabilizer block is sufficiently protonated to ensure solubility in the continuous phase. It is demonstrated (reported in the form of an extensive morphology diagram) that a range of morphologies including spherical particles, rods and vesicles can be accessed by adjustment of the pH (
via
addition of HCl) and the ionic strength (
via
the concentration of NaCl). A decrease in the charge density of the coronal stabilizer layer
via
an increase in the pH (less protonation) shifts the system towards higher order morphologies. At a given pH, an increase in ionic strength leads to more extensive charge screening, thus allowing formation of higher order morphologies.</abstract><doi>10.1039/C7PY00552K</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0001-5055-9046</orcidid><orcidid>https://orcid.org/0000-0003-3149-4464</orcidid><oa>free_for_read</oa></addata></record> |
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issn | 1759-9954 1759-9962 |
language | eng |
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source | Royal Society of Chemistry:Jisc Collections:Royal Society of Chemistry Read and Publish 2022-2024 (reading list) |
subjects | Charged particles Dispersions Methyl alcohol Morphology Polymerization Self assembly Strength |
title | Polymerization induced self-assembly: tuning of morphology using ionic strength and pH |
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