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  • Mankar, Smita V.Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH (author)

Short-Loop Chemical Recycling via Telechelic Polymers for Biobased Polyesters with Spiroacetal Units

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • 2023-03-23
  • American Chemical Society (ACS),2023
  • 12 s.

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  • LIBRIS-ID:oai:lup.lub.lu.se:6794189e-45c8-4aaf-bc35-7949457cee19
  • https://lup.lub.lu.se/record/6794189e-45c8-4aaf-bc35-7949457cee19URI
  • https://doi.org/10.1021/acssuschemeng.2c07176DOI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • Spirocyclic acetal structures have recently received growing attention in polymer science due to their dual potential to raise the glass transition temperature (Tg) and enable chemical recycling of biobased polymers. In the present work, a vanillin-based diol with a spirocyclic acetal structure was incorporated in a series of rigid amorphous polyesters based on neopentyl glycol and dimethyl terephthalate (DMT). Up to 50 mol % of spirocyclic diol (with respect to DMT) could be incorporated in the copolyesters, but a reasonably high molecular weight was only achieved when ≤30 mol % of the spirocyclic diol was used. The presence of the spiroacetal units in the polyesters not only enhanced the Tg (up to 103 °C) and thermal stability (T5 ≥ 300 °C) but also the oxygen barrier of solution-cast films. We found that the acetal units in the copolyesters could be selectively hydrolyzed under acidic conditions while virtually retaining all of the ester bonds in the polymer backbone. After acidic hydrolysis, telechelic polymers exclusively terminated by two aldehyde end groups were obtained. In this work, we have demonstrated that these telechelic polyesters can be conveniently converted back into poly(acetal-ester)s via cycloacetalization reactions with pentaerythritol.

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  • Wahlberg, JanTetra Pak AB (author)
  • Warlin, NiklasLund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ni2225wa (author)
  • Valsange, Nitin G.Lund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)ni6534va (author)
  • Rehnberg, NicolaLund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH,Bona Sweden AB(Swepub:lu)ni7414re (author)
  • Lundmark, StefanPerstorp AB (author)
  • Jannasch, PatricLund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)poly-pja (author)
  • Zhang, BaozhongLund University,Lunds universitet,Centrum för analys och syntes,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Centre for Analysis and Synthesis,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)chem-bzz (author)
  • Centrum för analys och syntesKemiska institutionen (creator_code:org_t)

Related titles

  • In:ACS Sustainable Chemistry & Engineering: American Chemical Society (ACS)11:13, s. 5135-51462168-0485

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