Statistical and Block Copolymers of n-Dodecyl and Allyl Isocyanate via Titanium-Mediated Coordination Polymerization: A Route to Polyisocyanates with Improved Thermal Stability.
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| Title: | Statistical and Block Copolymers of n-Dodecyl and Allyl Isocyanate via Titanium-Mediated Coordination Polymerization: A Route to Polyisocyanates with Improved Thermal Stability. |
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| Authors: | Iatrou, Maria1 (AUTHOR) iatmaria97@gmail.com, Katara, Aikaterini1 (AUTHOR) katerinakatara01@gmail.com, Klonos, Panagiotis A.2 (AUTHOR) panos48al@gmail.com, Kyritsis, Apostolos2 (AUTHOR) akyrits@central.ntua.gr, Pitsikalis, Marinos1 (AUTHOR) pitsikalis@chem.uoa.gr |
| Source: | Polymers (20734360). Dec2024, Vol. 16 Issue 24, p3537. 27p. |
| Subjects: | Subroutines (Computer programs), Gel permeation chromatography, Nuclear magnetic resonance, Differential scanning calorimetry, Copolymers, Block copolymers |
| Abstract: | Well-defined amorphous/semi-crystalline statistical copolymers of n-dodecyl isocyanate, DDIC, and allyl isocyanate, ALIC, were synthesized via coordination polymerization using the chiral half-titanocene complex CpTiCl2(O-(S)-2-Bu) as an initiator. In the frame of the terminal model, the monomer reactivity ratios of the statistical copolymers were calculated using both well-known linear graphical methods and the computer program COPOINT. The molecular and structural characteristics of the copolymers were also calculated. The thermal properties of these samples were studied by differential scanning calorimetry, DSC, measurements. The kinetics of the thermal decomposition of the statistical copolymers was studied by thermogravimetric analysis, TGA, and differential thermogravimetry, DTG, and the activation energy of this process was calculated by employing several theoretical models. Moreover, block copolymers with the structure P[DDIC-b-(DDIC-co-ALIC)] were synthesized by sequential addition of monomers and coordination polymerization methodologies. The samples were characterized by nuclear magnetic resonance, NMR, spectroscopy; size exclusion chromatography, SEC; and DSC. The thermal stability of the blocks was also studied by TGA and DTG and compared to the corresponding statistical copolymers, showing that the macromolecular architecture greatly affects the properties of the copolymers. A thiol-ene click post-polymerization reaction was performed to introduce aromatic groups along the polyisocyanate chain in order to improve the thermal stability of the parent polymers. Evidently, these statistical and block copolymers can be employed as precursors for the synthesis of novel polyisocyanate-based materials. [ABSTRACT FROM AUTHOR] |
| Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 181914361 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Statistical and Block Copolymers of n-Dodecyl and Allyl Isocyanate via Titanium-Mediated Coordination Polymerization: A Route to Polyisocyanates with Improved Thermal Stability. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Iatrou%2C+Maria%22">Iatrou, Maria</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> iatmaria97@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Katara%2C+Aikaterini%22">Katara, Aikaterini</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> katerinakatara01@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Klonos%2C+Panagiotis+A%2E%22">Klonos, Panagiotis A.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> panos48al@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Kyritsis%2C+Apostolos%22">Kyritsis, Apostolos</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> akyrits@central.ntua.gr</i><br /><searchLink fieldCode="AR" term="%22Pitsikalis%2C+Marinos%22">Pitsikalis, Marinos</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pitsikalis@chem.uoa.gr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. Dec2024, Vol. 16 Issue 24, p3537. 27p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Subroutines+%28Computer+programs%29%22">Subroutines (Computer programs)</searchLink><br /><searchLink fieldCode="DE" term="%22Gel+permeation+chromatography%22">Gel permeation chromatography</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance%22">Nuclear magnetic resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Differential+scanning+calorimetry%22">Differential scanning calorimetry</searchLink><br /><searchLink fieldCode="DE" term="%22Copolymers%22">Copolymers</searchLink><br /><searchLink fieldCode="DE" term="%22Block+copolymers%22">Block copolymers</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Well-defined amorphous/semi-crystalline statistical copolymers of n-dodecyl isocyanate, DDIC, and allyl isocyanate, ALIC, were synthesized via coordination polymerization using the chiral half-titanocene complex CpTiCl2(O-(S)-2-Bu) as an initiator. In the frame of the terminal model, the monomer reactivity ratios of the statistical copolymers were calculated using both well-known linear graphical methods and the computer program COPOINT. The molecular and structural characteristics of the copolymers were also calculated. The thermal properties of these samples were studied by differential scanning calorimetry, DSC, measurements. The kinetics of the thermal decomposition of the statistical copolymers was studied by thermogravimetric analysis, TGA, and differential thermogravimetry, DTG, and the activation energy of this process was calculated by employing several theoretical models. Moreover, block copolymers with the structure P[DDIC-b-(DDIC-co-ALIC)] were synthesized by sequential addition of monomers and coordination polymerization methodologies. The samples were characterized by nuclear magnetic resonance, NMR, spectroscopy; size exclusion chromatography, SEC; and DSC. The thermal stability of the blocks was also studied by TGA and DTG and compared to the corresponding statistical copolymers, showing that the macromolecular architecture greatly affects the properties of the copolymers. A thiol-ene click post-polymerization reaction was performed to introduce aromatic groups along the polyisocyanate chain in order to improve the thermal stability of the parent polymers. Evidently, these statistical and block copolymers can be employed as precursors for the synthesis of novel polyisocyanate-based materials. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/polym16243537 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 27 StartPage: 3537 Subjects: – SubjectFull: Subroutines (Computer programs) Type: general – SubjectFull: Gel permeation chromatography Type: general – SubjectFull: Nuclear magnetic resonance Type: general – SubjectFull: Differential scanning calorimetry Type: general – SubjectFull: Copolymers Type: general – SubjectFull: Block copolymers Type: general Titles: – TitleFull: Statistical and Block Copolymers of n-Dodecyl and Allyl Isocyanate via Titanium-Mediated Coordination Polymerization: A Route to Polyisocyanates with Improved Thermal Stability. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Iatrou, Maria – PersonEntity: Name: NameFull: Katara, Aikaterini – PersonEntity: Name: NameFull: Klonos, Panagiotis A. – PersonEntity: Name: NameFull: Kyritsis, Apostolos – PersonEntity: Name: NameFull: Pitsikalis, Marinos IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 12 Text: Dec2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 20734360 Numbering: – Type: volume Value: 16 – Type: issue Value: 24 Titles: – TitleFull: Polymers (20734360) Type: main |
| ResultId | 1 |
