Tmah 25 methanol solution

Polylactide (PLA) type Ingeo 2003D was purchased from NatureWorks (Minnetonka, MN, USA). The chemicals were purchased from the following sources: Tetraethoxysilane (TEOS) from Unisil (Poland), chlorodimethylsilane, tetramethylammonium hydroxide (TMAH) 25% methanol solution from ABCR, (R)-(+)-limonene, toluene, chloroform-d, Karstedt’s catalyst xylene solution from Aldrich, P₂O₅ from Avantor Performance Materials Poland S.A. toluene was degassed and dried by distilling it from P₂O₅ under argon atmosphere.

The chemicals were purchased from the following sources: Tetraethoxysilane (TEOS), chlorodimethylsilane, tetramethylammonium hydroxide (TMAH) 25% methanol solution from ABCR (Karlsruhe, Germany), allyl methacrylate, methacryloxypropyltrimethoxysilane, toluene, chloroform-d, Karstedt’s catalyst xylene solution and isopropanol from Aldrich (St. Louis, MO, USA), P₂O₅ from Avantor Performance Materials Poland S.A. (Gliwice, Poland). Toluene was degassed and dried by distilling it from P₂O₅ under argon atmosphere. To test the connection strength of the joint, the composite materials Harmonize color Enamel XXL and Harmonize color A3.5, and a bond system Optibond Solo were obtained from Kerr Dental, Orange, CA, USA. The material was polymerized with a diode lamp emitting light in the 420 nm range (DemiUltra, Kerr Dental, Orange, CA, USA). Digital Light Microscope Keyence VHX 7000 with 100× to 1000× VH-Z100T lens and a VHX 7020 camera (Osaka, Japan). SEM-EDS analyses were recorded on a Quanta FEG 250 (FEI) instrument at 30 kV. ¹H and COSY Nuclear Magnetic Resonance (NMR) spectra were recorded at 25 °C on a Bruker Ultra Shield 300 spectrometer using CDCl₃ as a solvent. Chemical shifts are reported in ppm with reference to the residual solvent (CHCl₃) peak.