TY  - JOUR
T1  - An Oligolactide Acrylate for UV-Curable Screen Printing Inks
AU - Saravari, Onusa AU - Kulsiriswad, Santi AU - Srikulkit, Kawee 
JO  - Journal of Engineering and Applied Sciences
VL  - 11
IS  - 12
SP  - 2775
EP  - 2780
PY  - 2016
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2016.2775.2780
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2016.2775.2780
KW  - UV-curable inks
KW  -acrylation
KW  -Oligolactide diols
KW  -viscosity
KW  -molecular
AB  - Oligolactide diols (OL-OHs) were synthesized by ring opening reaction of L-lactide with
1,6-hexanediol (HD) at 160°C for 3 h. The amount of HD was varied in order to obtain low molecular
weight OL-OHs. An Oligolactide Acrylate (OL-A) was then synthesized by functionalizing an OL-OH with
acrylic acid at 130&deg;C for 16 h. OL-OHs and the OL-A were characterized by <sup>1</sup>H-NMR, FTIR and GPC. The
viscosities of OL-OHs were measured by Brookfield viscometer. <sup>1</sup>H-NMR and FTIR results confirmed
that OL-OHs were synthesized successfully from lactide and HD as starting materials. It was found that an
increase in the HD amount led to lower molecular weight OL-OHs having lower viscosity. The <sup>1</sup>H-NMR and
FTIR results of the OL-A indicated that the OL-OH was functionalized with acrylic acid. A screen printing ink
was formulated from the OL-A. Cured ink film achieved by UV curing was characterized by FTIR. In addition,
adhesion of the obtained OL-A-based ink on various substrates was comparable with an ink made from
commercial polyester acrylate.
ER  -