Tab. 1.
Polysiloxane derivatives
| Core | Olefin 1 | Olefin 2 | Molar ratio |
|---|---|---|---|
| PWS | HEX | TMOS | 2:1 |
| PWS | OCT | TMOS | 4:1 |
| PWS | HEX | AGE | 2:1 |
| PWS | OCT | AGE | 2:1 |
Tab. 2.
3D Printing process parameters
| Parameter name | Parameter value |
|---|---|
| Layer height | 0.18 mm |
| Top layer height | 0.27 mm |
| Shells | 2 |
| Top and bottom layers number | 3 |
| Infill density | 100% |
| Fill angle | 45° |
| Infill pattern | Rectlinear grid |
| Printing speed | 60 mm/s |
| Idle speed | 80 mm/s |
| Extruder temp. | 230°C |
| Table temp. | 75°C |
Fig. 1.
PWS-2HEX-1AGE, Poly((hexylmethylsiloxane)-co-(3-propylglycidyl), trimethylsilyl terminated
Fig. 2.
PWS-2OKT-1AGE, Poly((methyloctylsiloxane)-co-(3-propylglycidyl), trimethylsilyl terminated
Fig. 3.
PWS-2HEX-1TMOS, Poly((hexylmethylsiloxane)-co-(methyl(trimethoxyethyl)siloxane)), trimethylsilyl terminated (94% convertion)
Fig. 4.
PWS-2OCT-1TMOS, Poly((methyloctylsiloxane)-co-(methyl(trimethoxyethyl)siloxane)), trimethylsilyl terminated (94% conversion)
Fig. 5.
Tensile strain (elongation at tensile strength) of PET-G and its composites as a function of polysiloxane-based modifier share
Fig. 6.
Force vs elongation curves of PET-G and its composites
Fig. 7.
Tensile strength of PET-G and its composites as a function of polysiloxane-based modifier share
Fig. 8.
Flexural strength of PET-G and its composites as a function of polysiloxane-based modifier share
Fig. 9.
Flexural modulus of PET-G and its composites as a function of polysiloxane-based modifier share
Fig. 10.
Melt flow rate of PET-G and its composites as a function of polysiloxane-based modifier share
Fig. 11.
Microscopic photos of sample fractures: 1A-2A Reference; 1B- 0.1%, 2B- 2.5% - PETG/PWS-AGE:2HEX; 1C- 0.1%, 2C- 2.5% - PETG/PWS-AGE:2OCT; 1D- 0.1%, 2D- 2.5% - PETG/PWS-TMOS:2OCT; 1E- 0.1%, 2E- 2.5% PETG/PWS-TMOS:2HEX
Tab. 3.
Contact angle measurement results for PET-G systems containing 2.5% polysiloxane-based additive
| Name of the sample | Contact angle[°] |
|---|---|
| PET-G neat | 70.6 |
| PETG/PWS-TMOS:2HEX | 73.4 |
| PETG/PWS-TMOS:4OCT | 80.6 |
| PETG/PWS-AGE:2HEX | 75.8 |
| PETG/PWS-AGE:2OCT | 88.2 |
Fig. 12.
DSC curves recorded for samples