Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 이학준 | - |
dc.date.accessioned | 2019-12-07T22:55:50Z | - |
dc.date.available | 2019-12-07T22:55:50Z | - |
dc.date.issued | 2018-05 | - |
dc.identifier.citation | RSC ADVANCES, v. 8, no. 36, page. 20032-20038 | en_US |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | https://pubs.rsc.org/en/content/articlelanding/2018/RA/C8RA03643H#!divAbstract | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/118512 | - |
dc.description.abstract | Carboxylated GAP copolymers (polyGA-carboxylate) compounds (1-7), were synthesized by the simultaneous substitution reaction with PECH, sodium azide, and sodium carboxylate in DMSO. The synthesized compounds (1-7) were characterized by various analysis tools, such as Fourier transform infrared (FT-IR), inverse gated decoupling C-13-nuclear magnetic resonance (C-13 NMR), gel permeation chromatography (GPC), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), calorimetry, and friction and impact sensitivity. These poly(GA-carboxylate) compounds (1-7) have better thermal properties owing to their lower glass transition temperatures, from -48 degrees C to -55 degrees C, compared to glycidyl azide polymer (GAP) (-49 degrees C) and similar first thermal decomposition temperatures (228-230 degrees C) in comparison to GAP (227 degrees C), regardless of the introduction of the carboxylate group in GAP. Moreover, poly(GA(0.8)-butyrate(0.2)) and poly(GA(0.8)-decanoate(0.2)) have higher heats of combustion (2331 and 2976 kJ mol(-1)) and negative formation enthalpies (-0.75 and -2.02 kJ g(-1)), while GAP has a lower heat of combustion (2029 kJ mol(-1)) and positive formation enthalpy (1.33 kJ g(-1)). Therefore, poly(GA-carboxylate) could be a good candidate for the polymeric binder in solid propellants. | en_US |
dc.description.sponsorship | This research was supported by the Defence Acquisition Program Administration (DAPA 912575201) and the Korean Ministry of Education through the BK21-Plus project. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | ROYAL SOC CHEMISTRY | en_US |
dc.subject | GLYCIDYL AZIDE POLYMERS | en_US |
dc.subject | BLOCK-COPOLYMERS | en_US |
dc.subject | THERMAL-DECOMPOSITION | en_US |
dc.subject | MECHANICAL-PROPERTIES | en_US |
dc.subject | BINDERS | en_US |
dc.subject | ELASTOMERS | en_US |
dc.subject | C-13-NMR | en_US |
dc.title | Ecofriendly synthesis and characterization of carboxylated GAP copolymers | en_US |
dc.type | Article | en_US |
dc.relation.no | 36 | - |
dc.relation.volume | 8 | - |
dc.identifier.doi | 10.1039/c8ra03643h | - |
dc.relation.page | 20032-20038 | - |
dc.relation.journal | RSC ADVANCES | - |
dc.contributor.googleauthor | Kim, Hancheul | - |
dc.contributor.googleauthor | Jang, Yoorim | - |
dc.contributor.googleauthor | Noh, Sitae | - |
dc.contributor.googleauthor | Jeong, Jongoh | - |
dc.contributor.googleauthor | Kim, Donghyun | - |
dc.contributor.googleauthor | Kang, Byeongkwan | - |
dc.contributor.googleauthor | Kang, Taewun | - |
dc.contributor.googleauthor | Choi, Hyungtaek | - |
dc.contributor.googleauthor | Rhee, Hakjune | - |
dc.relation.code | 2018010184 | - |
dc.sector.campus | S | - |
dc.sector.daehak | GRADUATE SCHOOL[S] | - |
dc.sector.department | DEPARTMENT OF BIONANOTECHNOLOGY | - |
dc.identifier.pid | hrhee | - |
dc.identifier.orcid | http://orcid.org/0000-0001-9467-6885 | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.