Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane
Shape memory polymer is widely used in bio-medical applications such as stents, sutures, drug delivery etc., However, the shape recovery behavior and mechanical properties in these applications are crucial and may be affected during shelf storage. The present research, therefore explores the effect...
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2024
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| Online Access: | http://dx.doi.org/10.1016/j.rineng.2024.101819 https://www.sciencedirect.com/science/article/pii/S2590123024000720 http://hdl.handle.net/10576/65852 |
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| _version_ | 1857415083678760960 |
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| author | Vasavi, Boggarapu |
| author2 | Namathoti, Sivanagaraju Avvari, Venkata Dinesh Peddakondigalla, Venkateswara Babu Shanmugam, Ragavanantham Ponnamma, Deepalekshmi Sreekanth, P.S. Rama |
| author2_role | author author author author author author |
| author_facet | Vasavi, Boggarapu Namathoti, Sivanagaraju Avvari, Venkata Dinesh Peddakondigalla, Venkateswara Babu Shanmugam, Ragavanantham Ponnamma, Deepalekshmi Sreekanth, P.S. Rama |
| author_role | author |
| dc.creator.none.fl_str_mv | Vasavi, Boggarapu Namathoti, Sivanagaraju Avvari, Venkata Dinesh Peddakondigalla, Venkateswara Babu Shanmugam, Ragavanantham Ponnamma, Deepalekshmi Sreekanth, P.S. Rama |
| dc.date.none.fl_str_mv | 2024-03-31 2025-06-29T09:31:53Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://dx.doi.org/10.1016/j.rineng.2024.101819 Boggarapu, V., Namathoti, S., Avvari, V. D., Peddakondigalla, V. B., Shanmugam, R., Ponnamma, D., & Sreekanth, P. R. (2024). Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane. Results in Engineering, 21, 101819. 25901230 https://www.sciencedirect.com/science/article/pii/S2590123024000720 http://hdl.handle.net/10576/65852 21 |
| dc.language.none.fl_str_mv | en |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.rights.none.fl_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Shape memory polymer Degradation Chain scission Shape recovery Motion curves |
| dc.title.none.fl_str_mv | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane |
| dc.type.none.fl_str_mv | Article info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Shape memory polymer is widely used in bio-medical applications such as stents, sutures, drug delivery etc., However, the shape recovery behavior and mechanical properties in these applications are crucial and may be affected during shelf storage. The present research, therefore explores the effect of shelf life on mechanical, thermal and shape recovery performance of polyurethane (PU) based shape memory polymer (SMP). Experimental samples S1, S3, S5 and S10 were prepared from polymer pellets that were stored for 1,3,5 and 10-year time duration respectively. FTIR analysis revealed that samples underwent degradation due to chain scissions influencing their performance. The results indicated that tensile and flexural strength decreased by 35.16 % and 29.3 % respectively, from S1 to S10. Fracture surfaces were examined under Scanning Electron Microscopy to identify the failure features. In addition, Differential scanning calorimetry (DSC)exhibited a decrease in glass transition temperature (Tg) from S1 to S10, resulting in a corresponding reduction in the rate of shape restoration. An in-depth analysis is conducted to investigate the relationship between polymer aging and the shape recovery behavior. Finally, the shape recovery motion curves in terms of displacement, velocity and acceleration concerning the time for all the specimens were also discussed in this study. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | qu_0bef0b5a27d8c88dd369f97a04c5861d |
| identifier_str_mv | Boggarapu, V., Namathoti, S., Avvari, V. D., Peddakondigalla, V. B., Shanmugam, R., Ponnamma, D., & Sreekanth, P. R. (2024). Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane. Results in Engineering, 21, 101819. 25901230 21 |
| language_invalid_str_mv | en |
| network_acronym_str | qu |
| network_name_str | Qatar University repository |
| oai_identifier_str | oai:qspace.qu.edu.qa:10576/65852 |
| publishDate | 2024 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| spelling | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethaneVasavi, BoggarapuNamathoti, SivanagarajuAvvari, Venkata DineshPeddakondigalla, Venkateswara BabuShanmugam, RagavananthamPonnamma, DeepalekshmiSreekanth, P.S. RamaShape memory polymerDegradationChain scissionShape recoveryMotion curvesShape memory polymer is widely used in bio-medical applications such as stents, sutures, drug delivery etc., However, the shape recovery behavior and mechanical properties in these applications are crucial and may be affected during shelf storage. The present research, therefore explores the effect of shelf life on mechanical, thermal and shape recovery performance of polyurethane (PU) based shape memory polymer (SMP). Experimental samples S1, S3, S5 and S10 were prepared from polymer pellets that were stored for 1,3,5 and 10-year time duration respectively. FTIR analysis revealed that samples underwent degradation due to chain scissions influencing their performance. The results indicated that tensile and flexural strength decreased by 35.16 % and 29.3 % respectively, from S1 to S10. Fracture surfaces were examined under Scanning Electron Microscopy to identify the failure features. In addition, Differential scanning calorimetry (DSC)exhibited a decrease in glass transition temperature (Tg) from S1 to S10, resulting in a corresponding reduction in the rate of shape restoration. An in-depth analysis is conducted to investigate the relationship between polymer aging and the shape recovery behavior. Finally, the shape recovery motion curves in terms of displacement, velocity and acceleration concerning the time for all the specimens were also discussed in this study.The authors acknowledge the funding support received from Science & Engineering Research Board, Department of Science & Technology, Govt. of India through a project CRG/2022/004693.Elsevier2025-06-29T09:31:53Z2024-03-31Articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1016/j.rineng.2024.101819Boggarapu, V., Namathoti, S., Avvari, V. D., Peddakondigalla, V. B., Shanmugam, R., Ponnamma, D., & Sreekanth, P. R. (2024). Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane. Results in Engineering, 21, 101819.25901230https://www.sciencedirect.com/science/article/pii/S2590123024000720http://hdl.handle.net/10576/6585221enhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:qspace.qu.edu.qa:10576/658522025-06-29T19:05:22Z |
| spellingShingle | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane Vasavi, Boggarapu Shape memory polymer Degradation Chain scission Shape recovery Motion curves |
| status_str | publishedVersion |
| title | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane |
| title_full | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane |
| title_fullStr | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane |
| title_full_unstemmed | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane |
| title_short | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane |
| title_sort | Influence of shelf-life duration on mechanical, thermal and shape recovery motion derivatives of shape memory polyurethane |
| topic | Shape memory polymer Degradation Chain scission Shape recovery Motion curves |
| url | http://dx.doi.org/10.1016/j.rineng.2024.101819 https://www.sciencedirect.com/science/article/pii/S2590123024000720 http://hdl.handle.net/10576/65852 |