Tough high modulus hydrogels derived from carbon-nitride via an ethylene glycol co-solvent route

Baris Kumru, Valerio Molinari, Menny Shalom, Markus Antonietti, Bernhard V.K.J. Schmidt

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

High concentration formulations of graphitic carbon nitride (g-CN) are utilized as photoinitiator and reinforcer for hydrogels. In order to integrate significant amounts of g-CN, ethylene glycol (EG) is employed as a co-solvent for the gel formation, which enables stable dispersion of up to 4 wt% g-CN. Afterwards, EG can be removed easily via solvent exchange to afford pure hydrogels. The diverse gels possess remarkably high storage moduli (up to 650 kPa for gels and 720 kPa for hydrogels) and compression moduli (up to 9.45 MPa for 4 wt% g-CN EG gel and 3.45 MPa for 4 wt% g-CN hydrogel). Full recovery without energy loss is observed for at least 20 cycles. Moreover, gel formation can be performed in a spatially controlled way utilizing photomasks with desired shapes. Therefore, the suggested method enables formation of hybrid gels by optical lithography with outstanding mechanical properties very similar to natural cartilage and tendon, and opens up opportunities for future applications in photocatalysis, additive manufacturing of biomedical implants and coating materials.

اللغة الأصليةإنجليزيّة أمريكيّة
الصفحات (من إلى)2655-2664
عدد الصفحات10
دوريةSoft Matter
مستوى الصوت14
رقم الإصدار14
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 1 يناير 2018

All Science Journal Classification (ASJC) codes

  • !!General Chemistry
  • !!Condensed Matter Physics

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