PL433979A1 - Bactericidal polylactide film and method of its preparation - Google Patents
Bactericidal polylactide film and method of its preparationInfo
- Publication number
- PL433979A1 PL433979A1 PL433979A PL43397920A PL433979A1 PL 433979 A1 PL433979 A1 PL 433979A1 PL 433979 A PL433979 A PL 433979A PL 43397920 A PL43397920 A PL 43397920A PL 433979 A1 PL433979 A1 PL 433979A1
- Authority
- PL
- Poland
- Prior art keywords
- pla
- tar
- weight
- preparation
- biostatic
- Prior art date
Links
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- Medicines Containing Plant Substances (AREA)
- Medicinal Preparation (AREA)
Abstract
Przedmiotem zgłoszenia jest folia PLA o właściwościach biostatycznych i bakteriobójczych, która charakteryzuje się tym, że zawiera od 0,02% do 5,0% masowych dziegciu. Zgłoszenie obejmuje także sposób otrzymywania folii PLA o właściwościach biostatycznych i bakteriobójczych, który charakteryzuje się tym, że granulat PLA rozpuszcza się w chloroformie w stosunku od 50:1 do 50:2 chloroform: PLA i miesza przez co najmniej 0,5 godziny, a następnie ciągle mieszając dodaje plastyfikatora, korzystnie poliwęglanu etylenowego w ilości od 1,5 do 2 krotności ilości PLA, po czym dodaje od 0,02% do 5% dziegciu w stosunku do całkowitej masy rozworu, korzystnie dziegciu brzozowego, a najkorzystniej dziegciu z kory brzozowej, a następnie wylewa na ograniczoną płaską powierzchnię przyjmując od 0,3 do 0,5 m2 powierzchni na 1 kg roztworu i odparowuje rozpuszczalnik a otrzymany arkusz folii suszy w temperaturze pokojowej przez okres od 24 do 48 godzin. Sposób otrzymywania folii PLA charakteryzuje się tym, że granulat PLA miesza się z dziegciem dla otrzymania mieszaniny o stężeniu w zakresie 0,02% do 5,0% masowych dziegciu, korzystnie 0,1% do 2,0% masowych dziegciu, a następnie poddaje formowaniu przez wytłaczanie folii płaskiej, w wytłaczarce jedno lub dwu-ślimakowej, korzystnie współbieżnej w temperaturze od 150°C do 260°C, korzystnie od 180°C do 185°C.The subject of the application is a PLA foil with biostatic and bactericidal properties, characterized by the fact that it contains from 0.02% to 5.0% by weight of tar. The application also covers a method for the preparation of PLA films with biostatic and bactericidal properties, which is characterized in that the PLA granules are dissolved in chloroform in a ratio of 50: 1 to 50: 2 chloroform: PLA and mixed for at least 0.5 hours, and then while stirring constantly, adds a plasticizer, preferably polycarbonate, in an amount from 1.5 to 2 times the amount of PLA, and then adds from 0.02% to 5% of tar in relation to the total weight of the honeysuckle, preferably birch tar, and most preferably birch bark, and then it is poured onto a limited flat surface, taking from 0.3 to 0.5 m2 of area per 1 kg of the solution, and the solvent is evaporated off, and the foil sheet obtained is dried at room temperature for 24 to 48 hours. The PLA film preparation method is characterized in that the PLA granulate is mixed with tar to obtain a mixture with a concentration in the range of 0.02% to 5.0% by weight of tar, preferably 0.1% to 2.0% by weight of tar, and then subjected to flat film extrusion in a single or twin screw extruder, preferably co-rotating at a temperature from 150 ° C to 260 ° C, preferably from 180 ° C to 185 ° C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL433979A PL433979A1 (en) | 2020-05-15 | 2020-05-15 | Bactericidal polylactide film and method of its preparation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL433979A PL433979A1 (en) | 2020-05-15 | 2020-05-15 | Bactericidal polylactide film and method of its preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
PL433979A1 true PL433979A1 (en) | 2021-11-22 |
Family
ID=78719731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PL433979A PL433979A1 (en) | 2020-05-15 | 2020-05-15 | Bactericidal polylactide film and method of its preparation |
Country Status (1)
Country | Link |
---|---|
PL (1) | PL433979A1 (en) |
-
2020
- 2020-05-15 PL PL433979A patent/PL433979A1/en unknown
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