Polylactic acid (PLA) has good thermal stability, a processing temperature of 170-230°C, and good solvent resistance. It can be processed in a variety of ways, such as extrusion, spinning, and biaxial stretching. In addition to being biodegradable, products made of polylactic acid have good biocompatibility, gloss, transparency and heat resistance. They also have certain bacterial resistance, flame retardancy and UV resistance. Therefore, it has a wide range of uses and can be used as packaging materials, fibers and nonwovens. It is currently mainly used in daily necessities, industry and biomedical fields.
3D Printing Materials Product List for Research and Development
| CAS | Product Name | Inquiry |
| 124578-11-6 | Polystyrene-b-poly(ethylene-ran-butylene)-b-polystyrene-g-maleic anhydride | Inquiry |
| 134490-19-0 | Poly(l-lactide-co-caprolactone-co-glyco& | Inquiry |
| 26023-30-3 | Polylactic acid | Inquiry |
| 26100-51-6 | Polylactic Acid, Mw ~60,000 | Inquiry |
| 26680-10-4 | 3,6-Dimethyl-1,4-dioxane-2,5-dione homopolymer | Inquiry |
| 26780-50-7 | Poly(d,l-lactide-co-glycolide) | Inquiry |
| 9000-70-8 | Gelatin | Inquiry |
Ferroelectric lithography technology is a high-precision processing technology that cans purposefully design and control ferroelectric domains at the micro/nano scale. It has very important applications in the fields of non-volatile memory, sensors, field effect transistors, track memories, photodetectors and other fields.
The probe of a piezoelectric force microscope (PFM) can be used like a pen to apply voltage on a piece of ferroelectric material to draw the desired domain pattern. At present, research on ferroelectric lithography technology mainly focuses on inorganic ceramics. However, inorganic ceramics themselves have shortcomings such as rigidity, difficulty in processing, difficulty in film preparation, and the possibility of containing toxic elements. In contrast, molecular ferroelectric materials have the advantages of light weight, solution processability, environmental friendliness, low acoustic impedance, and good biocompatibility, and are an effective complement to inorganic ferroelectric materials. However, there are very few materials that can achieve ferroelectric nanolithography. For example, under the guidance of ferroelectrochemistry, the team also synthesized a pair of organic enantiomers, disubstituted mufuric acid derivatives. Using PFM technology, applying a local electric field to the above-mentioned ferroelectric crystalline film can accurately achieve 6 consecutive polarization flips and lithography of domain patterns in the same area, and the retention time is extremely long. However, the synthesis of this organic crystal is more complicated, and the crystal is fragile and has poor flexibility. Organic ferroelectric polymers have good mechanical flexibility, which is suitable for the application scenarios of wearable electronic devices. Research on ferroelectric lithography of organic ferroelectric polymers mainly focuses on polyvinylidene fluoride (PVDF) and its copolymers. However, the complex stretch polarization process and poor biodegradability hinder their application in the biomedical field.
Some researchers have used ferroelectrochemical theory to explore the ferroelectric nanolithography behavior based on biodegradable polylactic acid (PLA) films. The researchers used a simple melt-casting method to prepare a PLA film with room temperature ferroelectricity and ferroelectric lithography capabilities under simple conditions without stretching and high-voltage polarization. By applying a local electric field of a specific size, ferroelectric polarization reversal can be achieved on PLA films at room temperature. It is particularly noteworthy that the ferroelectric domain structure can also be accurately written and erased on the surface of the PLA film according to a predetermined pattern. This may be due to the small grain size and high uniformity of the prepared PLA film, which makes PLA less likely to show obvious domain diffusion. In addition, the coercive voltage of the PLA film is relatively low (less than 30 V) and can be further reduced as the film thickness decreases, which provides a prerequisite for the subsequent application of the material. It is reported that PLA is the first biocompatible and biodegradable organic ferroelectric polymer. The discovery of its room temperature ferroelectricity and ferroelectric lithography ability is of great significance for biomedicine and bioelectronics applications, especially suitable for implantable transient electronic medical devices. .
