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Light processable hydrogels were successfully fabricated by utilizing maize starch as raw material. To render light processability, starch was gelatinized and methacrylated by simple reaction with methacrylic anhydride. The methacrylated starch was then evaluated for its photocuring reactivity and 3D printability by digital light processing (DLP). Hydrogels with good mechanical properties and biocompatibility were obtained by direct curing from aqueous solution containing lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) as photo-initiator. The properties of the hydrogels were tunable by simply changing the concentration of starch in water. Photo-rheology showed that the formulations with 10 or 15 wt% starch started curing immediately and reached G’ plateau after only 60 s, while it took 90 s for the 5 wt% formulation. The properties of the photocured hydrogels were further characterized by rheology, compressive tests, and swelling experiments. Increasing the starch content from 10 to 15 wt% increased the compressive stiffness from 13 to 20 kPa. This covers the stiffness of different body tissues giving promise for the use of the hydrogels in tissue engineering applications. Good cell viability with human fibroblast cells was confirmed for all three starch hydrogel formulations indicating no negative effects from the methacrylation or photo-crosslinking reaction. Finally, the light processability of methacrylated starch by digital light processing (DLP) 3D printing directly from aqueous solution was successfully demonstrated. Altogether the results are promising for future application of the hydrogels in tissue engineering and as cell carriers
  • 11 October 2020

Light Processable Starch Hydrogels

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UV cured membranes
  • 10 April 2020

UV-Cured ultrafiltration membranes

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3D‐Printing of High‐κ Thiol‐Ene Resins with Spiro‐Orthoesters as Anti‐Shrinkage Additive
  • 25 October 2019

Anti‐shrinkage monomers for 3D-printing

In our latest paper we have worked for reducing shrinkage of polymeric 3D-printed materials. Congrats to Phillip Marx, Angelo Romano, and all co-authors.

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Synthesis of high payload nanohydrogels for the ecapsulation of hydrophilic molecules via inverse miniemulsion polymerization: caffeine as a case study
  • 9 October 2019

Polymeric nanohydrogels via UV radiation for drug delivery

Discover our latest findings on the production of polymeric nanohydrogels via UV radiation for drug delivery. Congrats to Fiora Artusio and all co-authors.

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Photopolymer Lab

Marco Sangermano
Research Group
@ Politecnico di Torino

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Department of Applied Science and Technology,
Politecnico di Torino
Corso Duca degli Abruzzi, 24
10124, Torino
Italy

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+39 011 0904651

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Latest Events

  • Seminar at Monash University – Photopolymerization as a powerful tool for materials synthesis

    Feb 20, 2020
  • Doctoral course at EPFL Lausanne – Science and technology of UV-induced polymerization

    Jan 29, 2020
  • Taishan Academic Forum-Materials on New Energy & 2nd International New Energy Forum

    Nov 1, 2019
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News feed

  • 2 years ago

    Light Processable Starch Hydrogels

  • 3 years ago

    UV-Cured ultrafiltration membranes

  • 3 years ago

    Graduation day

  • 3 years ago

    Bachelor students graduation

  • 3 years ago

    A new semester starts today despite coronavirus

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26 Jun 2021

Honoured to receive the prestigious award for the best paper in the field of cationic photopolymerization at the virtual symposium of ESPS meeting, dedicated to the memory of Professor Crivello.

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