Polymerization of α-pinene catalyzed by Lewis acidic deep eutectic solvents
A series of low-cost Lewis acidic deep eutectic solvents (DESs) was synthesized and applied for the first time for catalyzing the polymerization of α-pinene to produce terpene resins. The DES catalyst of [AlCl 3 ] 3 [CPL] prepared via the self-assembly of AlCl 3 and caprolactam (CPL) exhibited the h...
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| Veröffentlicht in: | New journal of chemistry 2024-03, Vol.48 (1), p.458-4588 |
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| creator | Ji, Ningning Yu, Fengli Yuan, Bing Xie, Congxia Yu, Shitao |
| description | A series of low-cost Lewis acidic deep eutectic solvents (DESs) was synthesized and applied for the first time for catalyzing the polymerization of α-pinene to produce terpene resins. The DES catalyst of [AlCl
3
]
3
[CPL] prepared
via
the self-assembly of AlCl
3
and caprolactam (CPL) exhibited the highest catalytic activity, and polymerization conditions were optimized by a single-factor method: 15 g α-pinene, 3 g catalyst, 1 g initiator, −5 °C reaction temperature, and 4 h reaction time. Under these conditions, the softening point of the terpene resin reached (annular spheroid method) 118.3 °C, the acid value was 0.22 mg KOH g
−1
, and the depth of color (Fe-Co method) was 5. The structure of [AlCl
3
]
3
[CPL] was characterized using FT-IR,
1
H-NMR, and UV-vis spectroscopy. GPC measure showed that the number-average molecular weight of the terpene resin was 510, the weight-average molecular weight was 776, and the polydispersity index was 1.523. TG results indicated that the terpene resin had favorable thermal stability. After the reaction, the product and the catalyst could be automatically divided into two phases, which was beneficial for recycling the catalyst. The results revealed that [AlCl
3
]
3
[CPL] exhibited good recyclability.
A green and effective catalytic system for α-pinene polymerization using a recyclable Lewis acidic DES catalyst has been developed. |
| doi_str_mv | 10.1039/d4nj00009a |
| format | Article |
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3
]
3
[CPL] prepared
via
the self-assembly of AlCl
3
and caprolactam (CPL) exhibited the highest catalytic activity, and polymerization conditions were optimized by a single-factor method: 15 g α-pinene, 3 g catalyst, 1 g initiator, −5 °C reaction temperature, and 4 h reaction time. Under these conditions, the softening point of the terpene resin reached (annular spheroid method) 118.3 °C, the acid value was 0.22 mg KOH g
−1
, and the depth of color (Fe-Co method) was 5. The structure of [AlCl
3
]
3
[CPL] was characterized using FT-IR,
1
H-NMR, and UV-vis spectroscopy. GPC measure showed that the number-average molecular weight of the terpene resin was 510, the weight-average molecular weight was 776, and the polydispersity index was 1.523. TG results indicated that the terpene resin had favorable thermal stability. After the reaction, the product and the catalyst could be automatically divided into two phases, which was beneficial for recycling the catalyst. The results revealed that [AlCl
3
]
3
[CPL] exhibited good recyclability.
A green and effective catalytic system for α-pinene polymerization using a recyclable Lewis acidic DES catalyst has been developed.</description><identifier>ISSN: 1144-0546</identifier><identifier>EISSN: 1369-9261</identifier><identifier>DOI: 10.1039/d4nj00009a</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Aluminum chloride ; Caprolactam ; Catalysts ; Catalytic activity ; Molecular weight ; NMR ; Nuclear magnetic resonance ; Polydispersity ; Polymerization ; Recyclability ; Resins ; Self-assembly ; Softening points ; Solvents ; Thermal stability</subject><ispartof>New journal of chemistry, 2024-03, Vol.48 (1), p.458-4588</ispartof><rights>Copyright Royal Society of Chemistry 2024</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c240t-37ed24e6505f723ee1857c4b3d43aa7ab875fe1dd2e4beb2ed55301ddf7cc2b73</cites><orcidid>0000-0002-1209-2745 ; 0000-0002-7204-6361 ; 0000-0003-1904-8146</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>Ji, Ningning</creatorcontrib><creatorcontrib>Yu, Fengli</creatorcontrib><creatorcontrib>Yuan, Bing</creatorcontrib><creatorcontrib>Xie, Congxia</creatorcontrib><creatorcontrib>Yu, Shitao</creatorcontrib><title>Polymerization of α-pinene catalyzed by Lewis acidic deep eutectic solvents</title><title>New journal of chemistry</title><description>A series of low-cost Lewis acidic deep eutectic solvents (DESs) was synthesized and applied for the first time for catalyzing the polymerization of α-pinene to produce terpene resins. The DES catalyst of [AlCl
3
]
3
[CPL] prepared
via
the self-assembly of AlCl
3
and caprolactam (CPL) exhibited the highest catalytic activity, and polymerization conditions were optimized by a single-factor method: 15 g α-pinene, 3 g catalyst, 1 g initiator, −5 °C reaction temperature, and 4 h reaction time. Under these conditions, the softening point of the terpene resin reached (annular spheroid method) 118.3 °C, the acid value was 0.22 mg KOH g
−1
, and the depth of color (Fe-Co method) was 5. The structure of [AlCl
3
]
3
[CPL] was characterized using FT-IR,
1
H-NMR, and UV-vis spectroscopy. GPC measure showed that the number-average molecular weight of the terpene resin was 510, the weight-average molecular weight was 776, and the polydispersity index was 1.523. TG results indicated that the terpene resin had favorable thermal stability. After the reaction, the product and the catalyst could be automatically divided into two phases, which was beneficial for recycling the catalyst. The results revealed that [AlCl
3
]
3
[CPL] exhibited good recyclability.
A green and effective catalytic system for α-pinene polymerization using a recyclable Lewis acidic DES catalyst has been developed.</description><subject>Aluminum chloride</subject><subject>Caprolactam</subject><subject>Catalysts</subject><subject>Catalytic activity</subject><subject>Molecular weight</subject><subject>NMR</subject><subject>Nuclear magnetic resonance</subject><subject>Polydispersity</subject><subject>Polymerization</subject><subject>Recyclability</subject><subject>Resins</subject><subject>Self-assembly</subject><subject>Softening points</subject><subject>Solvents</subject><subject>Thermal stability</subject><issn>1144-0546</issn><issn>1369-9261</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNpFkMtKxDAUhoMoOI5u3AsBd0I112ayHMY7RV3ouqTJKWTotDXpKJ238kV8JqMjejb_-eHjHPgQOqbknBKuL5xolySNNjtoQnmuM81yupt2KkRGpMj30UGMiaFU5XSCiqeuGVcQ_MYMvmtxV-PPj6z3LbSArRlMM27A4WrEBbz7iI31zlvsAHoM6wHskFrsmjdoh3iI9mrTRDj6zSl6ub56XtxmxePN3WJeZJYJMmRcgWMCcklkrRgHoDOprKi4E9wYZaqZkjVQ5xiICioGTkpOUq-VtaxSfIpOt3f70L2uIQ7lsluHNr0smeaCas3lLFFnW8qGLsYAddkHvzJhLCkpv22Vl-Lh_sfWPMEnWzhE-8f92-RfUhxoFg</recordid><startdate>20240304</startdate><enddate>20240304</enddate><creator>Ji, Ningning</creator><creator>Yu, Fengli</creator><creator>Yuan, Bing</creator><creator>Xie, Congxia</creator><creator>Yu, Shitao</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>H9R</scope><scope>JG9</scope><scope>KA0</scope><orcidid>https://orcid.org/0000-0002-1209-2745</orcidid><orcidid>https://orcid.org/0000-0002-7204-6361</orcidid><orcidid>https://orcid.org/0000-0003-1904-8146</orcidid></search><sort><creationdate>20240304</creationdate><title>Polymerization of α-pinene catalyzed by Lewis acidic deep eutectic solvents</title><author>Ji, Ningning ; Yu, Fengli ; Yuan, Bing ; Xie, Congxia ; Yu, Shitao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c240t-37ed24e6505f723ee1857c4b3d43aa7ab875fe1dd2e4beb2ed55301ddf7cc2b73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Aluminum chloride</topic><topic>Caprolactam</topic><topic>Catalysts</topic><topic>Catalytic activity</topic><topic>Molecular weight</topic><topic>NMR</topic><topic>Nuclear magnetic resonance</topic><topic>Polydispersity</topic><topic>Polymerization</topic><topic>Recyclability</topic><topic>Resins</topic><topic>Self-assembly</topic><topic>Softening points</topic><topic>Solvents</topic><topic>Thermal stability</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ji, Ningning</creatorcontrib><creatorcontrib>Yu, Fengli</creatorcontrib><creatorcontrib>Yuan, Bing</creatorcontrib><creatorcontrib>Xie, Congxia</creatorcontrib><creatorcontrib>Yu, Shitao</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Illustrata: Natural Sciences</collection><collection>Materials Research Database</collection><collection>ProQuest Illustrata: Technology Collection</collection><jtitle>New journal of chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ji, Ningning</au><au>Yu, Fengli</au><au>Yuan, Bing</au><au>Xie, Congxia</au><au>Yu, Shitao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Polymerization of α-pinene catalyzed by Lewis acidic deep eutectic solvents</atitle><jtitle>New journal of chemistry</jtitle><date>2024-03-04</date><risdate>2024</risdate><volume>48</volume><issue>1</issue><spage>458</spage><epage>4588</epage><pages>458-4588</pages><issn>1144-0546</issn><eissn>1369-9261</eissn><abstract>A series of low-cost Lewis acidic deep eutectic solvents (DESs) was synthesized and applied for the first time for catalyzing the polymerization of α-pinene to produce terpene resins. The DES catalyst of [AlCl
3
]
3
[CPL] prepared
via
the self-assembly of AlCl
3
and caprolactam (CPL) exhibited the highest catalytic activity, and polymerization conditions were optimized by a single-factor method: 15 g α-pinene, 3 g catalyst, 1 g initiator, −5 °C reaction temperature, and 4 h reaction time. Under these conditions, the softening point of the terpene resin reached (annular spheroid method) 118.3 °C, the acid value was 0.22 mg KOH g
−1
, and the depth of color (Fe-Co method) was 5. The structure of [AlCl
3
]
3
[CPL] was characterized using FT-IR,
1
H-NMR, and UV-vis spectroscopy. GPC measure showed that the number-average molecular weight of the terpene resin was 510, the weight-average molecular weight was 776, and the polydispersity index was 1.523. TG results indicated that the terpene resin had favorable thermal stability. After the reaction, the product and the catalyst could be automatically divided into two phases, which was beneficial for recycling the catalyst. The results revealed that [AlCl
3
]
3
[CPL] exhibited good recyclability.
A green and effective catalytic system for α-pinene polymerization using a recyclable Lewis acidic DES catalyst has been developed.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/d4nj00009a</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-1209-2745</orcidid><orcidid>https://orcid.org/0000-0002-7204-6361</orcidid><orcidid>https://orcid.org/0000-0003-1904-8146</orcidid></addata></record> |
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| source | Royal Society Of Chemistry Journals; Alma/SFX Local Collection |
| subjects | Aluminum chloride Caprolactam Catalysts Catalytic activity Molecular weight NMR Nuclear magnetic resonance Polydispersity Polymerization Recyclability Resins Self-assembly Softening points Solvents Thermal stability |
| title | Polymerization of α-pinene catalyzed by Lewis acidic deep eutectic solvents |
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