Polymer material with shape and color memory function as well as preparation method and application of polymer material

A polymer material and color technology, applied in the field of shape memory polymer materials, can solve the problems of application limitation, single function reversible deformation, no other functions, etc., and achieve the effects of low production cost, good mechanical properties, and simple preparation process.

Active Publication Date: 2021-11-23
SOUTH CHINA UNIV OF TECH
3 Cites 2 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, current research is mainly focused on the design and synthesis of two-way reversible shape memory polymer materials, and most of the synthesis process requires harsh reaction conditions, such as: metal catalysts, light, high temperature and high pressure, etc. (A...
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Abstract

The invention discloses a polymer material with a shape and color memory function and a preparation method and application of the polymer material. The preparation method of the polymer material with the shape and color memory function comprises the following steps: 1) mixing a cyclic monomer and a polyhydroxy compound monomer, and carrying out a ring-opening reaction in a protective atmosphere to obtain a prepolymer; and 2) dispersing the prepolymer, a binary alkyne monomer, aggregation-induced emission molecules and an organic base catalyst in a solvent, and carrying out click polymerization reaction to obtain the polymer material with the shape and color memory function. The polymer material disclosed by the invention can generate reversible changes of luminous color, luminous intensity and shape under external stimulation, is relatively high in mechanical property, simple in preparation process and low in production cost, and has a wide application prospect in the fields of biological bionics, intelligent driving, dynamic anti-counterfeiting and the like.

Technology Topic

PrepolymerOrganic base +8

Image

  • Polymer material with shape and color memory function as well as preparation method and application of polymer material
  • Polymer material with shape and color memory function as well as preparation method and application of polymer material
  • Polymer material with shape and color memory function as well as preparation method and application of polymer material

Examples

  • Experimental program(3)

Example Embodiment

[0035] Example 1:
[0036] A polymeric material having a shape and color memory function, the preparation method thereof comprises the steps of:
[0037] 1) 3 g of 3 g of hexide and 0.2 g of pentaerythritol were mixed with a nitrogen atmosphere of 130 ° C for 12 h, and 2 ml of chloroform was added to the reaction product, and then the resulting solution was added dropwise to 200 ml of methanol, and precipitated. The precipitate was collected, and the vacuum was dried in vacuo to constant weight at 30 ° C to give prepolymer P1;
[0038] 2) 0.4 g of prepolymer P1, 49.4 mg of Compound M3 (synthetic method reference RSC ADV., 2015, 5, 77922-77931; sci.China Chem., 2016, 59, 1554-1560), 6mg (Synthetic Method Refer to J.MATER.CHEM.C 2013, 1,4640) and 2.5 mg of DABCO dispersed in 2 ml of tetrahydrofuran, stirred at 25 ° C for 60s, and then poured into the polytetrafluoride mold, and transferred to a fumet 2 Angel The solvent is fully naturally evaporated, and the polymer material PC1 having a shape and color memory function is obtained.
[0039] The preparation reaction of the polymer material PC1 having a shape and color memory function of the present embodiment is as follows:
[0040]
[0041] Performance Testing:
[0042] 1) Fluorescence spectrum (from -100 ° C raised to 100 ° C), for example, of the polymeric material PC1 having a shape and color memory function figure 1 As shown, the fluorescence spectrum in the cooling process (from 100 ° C to -100 ° C) is as figure 2 The color effect of different temperatures is like image 3 Indicated.
[0043] Depend on figure 1 It can be seen: As the temperature increases from -100 ° C to 100 ° C, the fluorescence wavelength is removed from 519 nm to 575 nm, and the fluorescence intensity is gradually lowered.
[0044] Depend on figure 2 It can be seen: As the temperature is lowered from 100 ° C to -100 ° C, the fluorescent wavelength is from 575 nm to 519 nm, and the fluorescence intensity is gradually increased, and the fluorescence color and fluorescence intensity have reversible.
[0045] Depend on image 3 It can be seen that the film is bright yellow-green light at -50 ° C, orange light at 50 ° C, darkening orange light at 100 ° C, and changes the temperature of the temperature to reverse.
[0046]2) The polymeric material PC1 having a shape and color memory function of the present embodiment is formed into a length strip, and then programmed into different shapes (U-shaped and helical) at 70 ° C, and then use liquid nitrogen guns. Quickly cool it, fixed at this time, and then heating the sample by heating gun to 50 ° C in a UV light of the wavelength of 365 nm, and then cools the sample liquid nitrogen gun to observe the light-emitting color of the spline during the entire process. Inverse change behavior of intensity and shape, test results Figure 4 Indicated.
[0047] Depend on Figure 4 It can be seen: Under the UV light of the wavelength of 365 nm, the spline is heated to 50 ° C, and the spline becomes orange from yellow green, and the luminous intensity is lowered, and the shape is refreshed and decomposed, that is, the sample from the U And the helical type becomes a V-type and solution, and the spline is again cooled, the sample light is restored from orange to yellow green, the luminous intensity is enhanced, the spline is bent and curled, and the temperature change, the color color, The illumination intensity and shape are reversible.
[0048] 3) Cooling the polymer material PC1 having a shape and color memory function of the present embodiment, first cooling to -50 ° C, then heating the sample to 50 ° C, observe the flow of flowers throughout the process Reversible change of light emission color, luminous intensity and shape, test results Figure 5 Indicated.
[0049] Depend on Figure 5 It can be seen: Cool the flowers to -50 ° C, the flower sample is bright yellow, heat the flowers of the flowers to 50 ° C, the flowers from yellow green becomes orange, the luminous intensity is reduced, and shape From the closed flowers into open flowers, the flower-shaped sample is then cooled, and the flowers of the flower sample will return from orange to yellow green, the luminescence intensity is enhanced, and the flowers from the open state becomes closed state, repeat the temperature. Change, light emission color, luminescence intensity and shape thereby reversibly change.
[0050] 4) Made a length strip-shaped sample of the polymer material PC1 having a shape and color memory function of the present embodiment, under the UV light of the wavelength of 365 nm, first heated the long stroke to 100 ° C, one weight Suspended onto the sample, then cooled the long strip sample with a liquid nitrogen gun to -50 ° C, then release the heavy material, and then heated the long strip sample to 100 ° C to observe the light-emitting color of the long strip sample during the entire process. Reverse change behavior of luminous intensity and shape, test results Image 6 Indicated.
[0051] Depend on Image 6 It can be seen that the long ribs are heated to 100 ° C with a hot gun, and a weight is hung on the long strip sample, and the long strip sample is elongated under the action of the weight. At this time, the long strip sample is dark orange. The long strip sample is cooled to -50 ° C with a liquid nitrogen gun, and the long strip sample is further elongated, and the long strip sample is bright yellow and green, and the long strip sample is heated to 100 ° C, the sample shrinks, lifts the weight. The emission changes to dark orange, repeated temperature changes, luminous color, luminous intensity and shape, and reversible changes. This material can be used to mimic discolored artificial muscles, such as changing dragons can not only move, but also discolored.

Example Embodiment

[0052] Example 2:
[0053] A polymeric material having a shape and color memory function, the preparation method thereof comprises the steps of:
[0054] 1) 3 g of 3 g of lactide and 84 mg of pentaerythritol were mixed with a nitrogen atmosphere at 120 ° C for 24 h, and 2 ml of chloroform was added to the reaction product, and then the resulting solution was added dropwise to 200 mL of methanol, and collected. The precipitate, the vacuum is dry to constant weight, resulting in a prepolymer P2;
[0055] 2) M3 of 0.4 g of prepolymer P2, 35.6 mg M3 (synthetic method reference RSC ADV., 2015, 5, 77922-77931; sci.china Chem., 2016, 59, 1554-1560), 6mg (Synthetic Method Refer to J.MATER.CHEM.C 2013, 1,4640) and 2.5 mg of DABCO dispersed in 2 ml of tetrahydrofuran, stirred at 25 ° C for 60s, and then poured into the polytetrafluoride mold, and transferred to a fumet Place 2 Angel The solvent is completely evaporated, and a polymer material PC2 having a shape and color memory function is obtained.
[0056] The preparation reaction of the polymer material PC2 having a shape and color memory function of the present embodiment is as follows:
[0057]
[0058] Performance Testing:
[0059] The fluorescence spectrum of the polymer material PC2 having a shape and color memory function (raised from -50 ° C to 150 ° C), for example, Figure 7 The color effect of different temperatures is like Figure 8 Indicated.
[0060] Depend on Figure 7 It can be seen that as the temperature is raised from -50 ° C to 150 ° C, the fluorescence wavelength is removed from 529 nm to 561 nm, and the fluorescence intensity is gradually lowered.
[0061] Depend on Figure 8 It can be seen that the film is bright yellow-green light at 20 ° C, and orange light at 150 ° C, and changes the temperature of the temperature to be reversible.

Example Embodiment

[0062] Example 3:
[0063] A polymeric material having a shape and color memory function, the preparation method thereof comprises the steps of:
[0064] 0.4 g of a four-arm polyethylene glycol P3, 17.8 mg M3 (synthetic method reference RSC ADV., 2015, 5, 77922-77931; Sci.China Chem., 2016, 59, 1554-1560), 6mg (Synthetic Method Refer to J.MATER.CHEM.C 2013, 1,4640) and 2.5 mg of DABCO dispersed in 2 ml of tetrahydrofuran, stirred at 25 ° C for 60s, and then poured into the polytetrafluoride mold, and transferred to a fumet 2 Angel The solvent is completely evaporated, and the polymer material PC3 having a shape and color memory function is obtained.
[0065] The preparation reaction of the polymer material PC3 having a shape and color memory function of the present embodiment is as follows:
[0066]
[0067] Performance Testing:
[0068] The fluorescence spectrum of the polymer material PC3 having a shape and color memory function (raised to 40 ° C from -100 ° C to 40 ° C) is shown in the fluorescence spectrum of the polymer material PC3 having a shape and color memory function. Figure 9 The color effect of different temperatures is like Figure 10 Indicated.
[0069] Depend on Figure 9 It can be seen that as the temperature is raised from -100 ° C to 40 ° C, the fluorescence wavelength is removed from 521 nm to 594 nm, and the fluorescence intensity is gradually lowered.
[0070] Depend on Figure 10 It can be seen that the film is bright yellow-green light at -50 ° C, red orange light at 20 ° C, when the temperature rises to 65 ° C, dark red light, and changes the temperature of the temperature to be reversible.

PUM

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Description & Claims & Application Information

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