Photocurable Itaconic Acid-Functionalized Star Polycaprolactone
in Biobased Formulations for Vat Photopolymerization
Posted on 2024-02-13 - 07:07
Photopolymerization-based
three-dimensional (3D) printing techniques,
such as stereolithography (SLA), are becoming more popular due to
their ability to create complex geometries and material properties
that are difficult to achieve with other methods. However, a major
issue with photopolymerization-based techniques is that they rely
on the use of harmful (meth)acrylic acid esters derived from fossil
fuels. To address this, researchers have been exploring the use of
biobased alternatives such as itaconic acid, which is a building block
obtained through fermentation and has a photocurable double bond.
Additionally, aliphatic polyesters, such as polycaprolactone (PCL)
and its hyperbranched star-like polymers, have been discovered to
be biodegradable and low cost and have intricate 3D structures. However,
their solid thermoplastic features make them unsuitable for vat photopolymerization-based
techniques. This study proposes the one-pot synthesis of a liquid
itaconic acid-functionalized branched polycaprolactone macromer, named
sorbitol hexa(pentacaprolactone methyl itaconate), SH(PCI). The synthesized
(meth)acrylic-free low-molecular-weight polymer was then used to create
photocurable resins that could be 3D-printed into biobased thermosets
with high resolution and printability. The polymer and the printed
object were tested and characterized for structural, mechanical, and
thermal properties, and 10 different resins were proposed with biobased
contents of up to 97%, which are among the highest reported in the
literature so far. These resins lead to printed materials that cover
a broad range of mechanical properties, including elastic moduli ranging
from 22.1 to 218 MPa, elongations at breaks from 3.9 to 20%, and tensile
strengths from 3.6 to 11.6 MPa.
CITE THIS COLLECTION
DataCiteDataCite
3 Biotech3 Biotech
3D Printing in Medicine3D Printing in Medicine
3D Research3D Research
3D-Printed Materials and Systems3D-Printed Materials and Systems
4OR4OR
AAPG BulletinAAPG Bulletin
AAPS OpenAAPS Open
AAPS PharmSciTechAAPS PharmSciTech
Abhandlungen aus dem Mathematischen Seminar der Universität HamburgAbhandlungen aus dem Mathematischen Seminar der Universität Hamburg
ABI Technik (German)ABI Technik (German)
Academic MedicineAcademic Medicine
Academic PediatricsAcademic Pediatrics
Academic PsychiatryAcademic Psychiatry
Academic QuestionsAcademic Questions
Academy of Management DiscoveriesAcademy of Management Discoveries
Academy of Management JournalAcademy of Management Journal
Academy of Management Learning and EducationAcademy of Management Learning and Education
Academy of Management PerspectivesAcademy of Management Perspectives
Academy of Management ProceedingsAcademy of Management Proceedings
Academy of Management ReviewAcademy of Management Review
Spanu, Chiara; Locatelli, Erica; Sambri, Letizia; Comes Franchini, Mauro; Maturi, Mirko (1753). Photocurable Itaconic Acid-Functionalized Star Polycaprolactone
in Biobased Formulations for Vat Photopolymerization. ACS Publications. Collection. https://doi.org/10.1021/acsapm.3c03159