Unlike stable polymers such as PVCs that have high thermal stability, depolymerizable polymers and closely related self-immolative polymers can be triggered by stimuli to break fast under moderate to low temperatures.[2] The first type of polymers, poly (olefinsulfone), was reported by Snow and Frey in 1943.[3] It was further confirmed and explained in terms of the thermodynamics of a reversible propagation step by Dainton and Ivin.[4] Closely related to depolymerizable polymers, self-immolative polymers can also irreversibly disassemble into their constituent parts in response to stimuli such as temperature, biological inputs or pH.[5]
Applicationsedit
The first application of depolymerizable polymers is in transient electronics. Over the past several decades in the electronics industry, polymer research has focused on developing and optimizing durable and high-strength polymeric materials for use in electronics. Demand for consumer electronics and the generation of electronic waste has also prompted research into employing depolymerization methods to generate more sustainable and recyclable polymers. For example, a group of researchers employed light-sensitive poly(phthalaldehyde) as substrate materials for circuits. The destruction of the polymer substrate was triggered by UV irradiation (~379 nm).[1] Other applications include controlled release of small molecules, and as stimuli-responsive photoresists for lithography.[6]
^Peterson, Gregory I.; Larsen, Michael B.; Boydston, Andrew J. (2012-09-25). "Controlled Depolymerization: Stimuli-Responsive Self-Immolative Polymers". Macromolecules. 45 (18): 7317–7328. doi:10.1021/ma300817v. ISSN 0024-9297.
^Snow, R. D.; Frey, F. E. (1943-12-01). "The Reaction of Sulfur Dioxide with Olefins: the Ceiling Temperature Phenomenon". Journal of the American Chemical Society. 65 (12): 2417–2418. doi:10.1021/ja01252a052. ISSN 0002-7863.
^Dainton, F. S.; Ivin, K. J. (1948-10-30). "Reversibility of the Propagation Reaction in Polymerization Processes and its Manifestation in the Phenomenon of a 'Ceiling Temperature'". Nature. 162 (4122): 705–707. doi:10.1038/162705a0. ISSN 1476-4687. S2CID 4105548.
^Roberts, Derrick A.; Pilgrim, Ben S.; Dell, Tristan N.; Stevens, Molly M. (2020-04-08). "Dynamic pH responsivity of triazole-based self-immolative linkers". Chemical Science. 11 (14): 3713–3718. doi:10.1039/D0SC00532K. ISSN 2041-6539. PMC8152797. PMID 34094059.
depolymerizable, polymers, ceiling, temperature, polymers, refer, polymeric, materials, that, undergo, depolymerization, revert, materials, their, monomers, relatively, temperatures, such, room, temperature, example, ceiling, temperature, formaldehyde, that, a. Depolymerizable polymers or Low Ceiling Temperature Polymers refer to polymeric materials that can undergo depolymerization to revert the materials to their monomers at relatively low temperatures such as room temperature For example the ceiling temperature Tc for formaldehyde is 119 C and that for acetaldehyde is 39 C 1 Introduction editUnlike stable polymers such as PVCs that have high thermal stability depolymerizable polymers and closely related self immolative polymers can be triggered by stimuli to break fast under moderate to low temperatures 2 The first type of polymers poly olefin sulfone was reported by Snow and Frey in 1943 3 It was further confirmed and explained in terms of the thermodynamics of a reversible propagation step by Dainton and Ivin 4 Closely related to depolymerizable polymers self immolative polymers can also irreversibly disassemble into their constituent parts in response to stimuli such as temperature biological inputs or pH 5 Applications editThe first application of depolymerizable polymers is in transient electronics Over the past several decades in the electronics industry polymer research has focused on developing and optimizing durable and high strength polymeric materials for use in electronics Demand for consumer electronics and the generation of electronic waste has also prompted research into employing depolymerization methods to generate more sustainable and recyclable polymers For example a group of researchers employed light sensitive poly phthalaldehyde as substrate materials for circuits The destruction of the polymer substrate was triggered by UV irradiation 379 nm 1 Other applications include controlled release of small molecules and as stimuli responsive photoresists for lithography 6 References edit a b Kaitz Joshua A Lee Olivia P Moore Jeffrey S 2015 01 01 Depolymerizable polymers preparation applications and future outlook MRS Communications 5 2 191 204 doi 10 1557 mrc 2015 28 ISSN 2159 6867 Peterson Gregory I Larsen Michael B Boydston Andrew J 2012 09 25 Controlled Depolymerization Stimuli Responsive Self Immolative Polymers Macromolecules 45 18 7317 7328 doi 10 1021 ma300817v ISSN 0024 9297 Snow R D Frey F E 1943 12 01 The Reaction of Sulfur Dioxide with Olefins the Ceiling Temperature Phenomenon Journal of the American Chemical Society 65 12 2417 2418 doi 10 1021 ja01252a052 ISSN 0002 7863 Dainton F S Ivin K J 1948 10 30 Reversibility of the Propagation Reaction in Polymerization Processes and its Manifestation in the Phenomenon of a Ceiling Temperature Nature 162 4122 705 707 doi 10 1038 162705a0 ISSN 1476 4687 S2CID 4105548 Roberts Derrick A Pilgrim Ben S Dell Tristan N Stevens Molly M 2020 04 08 Dynamic pH responsivity of triazole based self immolative linkers Chemical Science 11 14 3713 3718 doi 10 1039 D0SC00532K ISSN 2041 6539 PMC 8152797 PMID 34094059 Kaitz Joshua A Lee Olivia P Moore Jeffrey S 2015 06 01 Depolymerizable polymers preparation applications and future outlook MRS Communications 5 2 191 204 doi 10 1557 mrc 2015 28 ISSN 2159 6867 nbsp This article about polymer science is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Depolymerizable polymers amp oldid 1140862125, wikipedia, wiki, book, books, library,
