NDLI: Study of the structure–property relationships in a high impact and shape memory polyester by the stereoisomer selection of the cyclobutane diol monomer

Content Provider	Springer Nature Link
Author	Nash, Yelena Nash, Tyler L. Henderson, Brandon Duraia, El Shazly M. Powell, Clois E. Sanderson, Brian Beall, Gary W.
Copyright Year	2013
Abstract	The diol and dicarboxylic acid in polyester synthesis are significant independent variables that relate directly to the structure–property-dependent variables of polyesters. The choice of the stereoisomers of the diol in the polyester synthesis can significantly alter the mechanical and thermal performance. Terephthalate polyesters prepared from the proper ratio of 2,2,4,4-tetramethyl-1,3-cyclobutanediol (CBDO) and 1,3-propanediol have superior impact resistance when compared to ballistics grade polycarbonate. In addition these polymers exhibit very strong self-healing behavior that is activated by heat. These copolymers were all produced with a mixture of cis and trans isomers with a ratio of 43/57, respectively. This study reports research conducted to determine the structure–property relationships that can be attributed to the stereoisomers of the CBDO monomer. The polyester prepared with 99 % cis (CBDO) monomer has significantly improved mechanical and thermal performance when compared with the polyester prepared with a 43:57 mixture of cis and trans isomers or 100 % trans isomer. Thermal gravimetric analysis and differential scanning calorimetry demonstrated that the cis CBDO polymer exhibit a much higher T $_{g}$ (99 °C for cis and 69 °C for the trans 84.5 °C for the mixed polymer) and better thermal stability than the trans form of the polymer (onset of decomposition of trans at 345 and 360 °C for cis). Dynamic mechanical analysis and the Notched Izod demonstrated that the cis form of the polymer was much tougher than the trans form. Wide angle X-ray diffraction showed that the trans form was semicrystalline and the cis form was amorphous. The Notched Izod impact was 1070 J/m for the cis CBDO-based copolymer with the trans form having an impact factor of 841 J/m with the mixed polymer exhibiting an intermediate value of 944 J/M. Molecular modeling supports the experimental evidence that the choice of stereoisomers for the diol significantly influences the molecular architecture of the polyesters. The molecular architecture of polyesters in addition to polar attraction and molecular weight variables provides a dramatic increase in mechanical and thermal performance.
Starting Page	8588
Ending Page	8595
Page Count	8
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	48
Issue Number	24
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2013-08-29
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Characterization and Evaluation of Materials Polymer Sciences Continuum Mechanics and Mechanics of Materials Crystallography Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Microstructure–property relationships in a high-strength 51Ni–29Ti–20Hf shape memory alloy

Recent advances in shape memory polymers and composites: a review

Shape memory property of microcrystalline cellulose–poly(ε-caprolactone) polymer network with broad transition temperature

Diffusion of small molecules in a shape memory polymer

Three-phase syntactic foams: structure-property relationships

Mechanical behavior of NiTi shape memory alloy fiber reinforced Sn matrix “smart” composites

Influence of temperature on the mechanical behaviour of polyester fibres

On the hydrolytic stability of polyester yarns

Compressive and ultrasonic properties of polyester/fly ash composites

Study of the structure–property relationships in a high impact and shape memory polyester by the stereoisomer selection of the cyclobutane diol monomer

Similar Documents

Microstructure–property relationships in a high-strength 51Ni–29Ti–20Hf shape memory alloy

Recent advances in shape memory polymers and composites: a review

Shape memory property of microcrystalline cellulose–poly(ε-caprolactone) polymer network with broad transition temperature

Diffusion of small molecules in a shape memory polymer

Three-phase syntactic foams: structure-property relationships

Mechanical behavior of NiTi shape memory alloy fiber reinforced Sn matrix “smart” composites

Influence of temperature on the mechanical behaviour of polyester fibres

On the hydrolytic stability of polyester yarns

Compressive and ultrasonic properties of polyester/fly ash composites

Study of the structure–property relationships in a high impact and shape memory polyester by the stereoisomer selection of the cyclobutane diol monomer