CN101157767A - Super-hydrophobic polystyrene film and preparation method thereof - Google Patents
Super-hydrophobic polystyrene film and preparation method thereof Download PDFInfo
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- CN101157767A CN101157767A CNA200710192405XA CN200710192405A CN101157767A CN 101157767 A CN101157767 A CN 101157767A CN A200710192405X A CNA200710192405X A CN A200710192405XA CN 200710192405 A CN200710192405 A CN 200710192405A CN 101157767 A CN101157767 A CN 101157767A
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Abstract
The present invention discloses a super-hydrophobic polystyrene thin film and a preparation method thereof. The fresh taro leaves are placed in a casting mould; the poly dimethyl siloxane (PDMS) prepolymer, the catalyst and the crosslinker thereof are mixed by the proportion of 100: 0.1 to 2: 1 to 10 and are stirred for 5 to 10 minutes, the bubbles in the mixture are drawn out, then the mixture is casted on the fresh taro leaves in the mould, the solidification is carried out for 18 to 30 hours at the room temperature and the atmospheric environment, after that, a PDMS soft template is torn out; the polystyrene-tetrahydrofuran solution with the concentration of 1 to 70 mg/ml is casted on the PDMS template and is torn out after drying for 8 to 12 hours at the room temperature and the atmospheric environment, so as to get the taro leaf super-hydrophobic polystyrene thin film. A contact angle between the thin film and the water is more than 150 degrees, and a rolling angle is less than 10 degrees. The thin film is tasteless and non-toxic, which has very broad application prospect in the liquid non-loss transportation, self-cleaning, water-proofing and moisture-proofing and other fields. The method has simple operational process, good controllability, low cost, no need of complicated chemical treatments, no need of the expensive equipments and easy industrialization.
Description
Technical field
The present invention relates to a kind of super-hydrophobic polystyrene film, the invention still further relates to the method that in the atmosphere at room temperature environment, prepares super-hydrophobic polystyrene film.
Background technology
Wettability is a critical nature of solid surface, mainly chemical constitution and the surfaceness by solid surface determines, at surface of smooth solid with minimum surface energy, its contact angle also can only be brought up to 120 ℃ at most, yet, but there are a large amount of super-hydrophobic surfaces in occurring in nature, and (contact angle of material surface and water is greater than 150 °, and water droplet has less roll angle from the teeth outwards), for example the contact angle of lotus leaf surface and water reaches 160 °, the contact angle of taro leaves and water reaches 159 °, professors Barthlott etc. were published in the mysterious veil that one piece of paper (Planta (1997) 202:1 ± 8) on the Planta magazine has been opened super hydrophobic surfaces such as taro leaves and lotus leaf in 1997, they find that all there are a large amount of projections in taro leaves and lotus leaf surface, the wax crystalls that distributing on these projections, this just special surface tissue makes taro leaves and lotus leaf surface produce super-hydrophobic character.
Because water droplet drips to and can form the glistening spherical globule on the super hydrophobic surface usually; the very little and globule of the globule and surface contact area very easily rolls and takes away the dust on surface; has self-cleaning character; in addition; super hydrophobic surface also has waterproof; antifog; anti-oxidant or the like characteristics; thereby can be applicable to the material of construction and the exterior coating of self-cleaning function; the textiles of self-cleaning function; the free of losses of liquid is carried; moisture-proof packaging material; the bio-medical materials of anticoagulant and blood contamination etc. all are with a wide range of applications in scientific research and industrial and agricultural production and daily life.Thereby caused extensive studies interest, the upsurge that has started the super hydrophobic surface preparation and used.At present, have a lot of methods to be used to make up solid material with super hydrophobic surface, as Jiang Lei etc. at " Angew.Chem.Int.Ed. " 2004,43, reported the super hydrophobic surface that utilizes electrospinning to prepare the class patellate on the 4338-4341, its contact angle is 160.4 ± 1.2 °; Jin Meihua etc. have reported on the 1977-1981 and have utilized aluminum oxide to prepare super-hydrophobic polystyrene film for template at " Advanced Materials " 2005,17; Poncin-Epaillard etc. are at " Surface ﹠amp; Coatings Technology " 2006,200, reported on the 5296-5305 and utilized plasma technique to prepare transparent super-hydrophobic polyethylene film that its contact angle reaches 170 °; Except above method, also have sol-gel method, fluorinated coating method, chemical Vapor deposition process, electrochemical deposition method, polyelectrolyte alternating deposit method, anonizing, mechanical stretching method etc.Yet, existing these methods or the expensive material of use, or need special processing units or complicated technological process, be difficult to apply.Therefore inventing a kind of simple technology prepares super hydrophobic surface and is necessary.
Summary of the invention
Technical problem to be solved by this invention provides the super-hydrophobic polystyrene film that a kind of performance is good, with low cost, be easy to produce.
Another technical problem that the present invention also will solve provides that a kind of operating procedure is simple, controllability good, cost is low, need not complex chemical treatment, also do not need expensive equipment, be easy to the preparation method of the super-hydrophobic polystyrene film of industrialization.
In order to solve the problems of the technologies described above, super-hydrophobic polystyrene film provided by the invention, its surface tissue is similar to the surface of natural fresh taro leaves, the contact angle of film and water between 150 °～160 °, water droplet in the roll angle of material surface less than 5 °.
The superhydrophobic property of super-hydrophobic polystyrene film of the present invention is stable, is that 0～40 ℃, relative humidity are to place 1 year in 20%～70% the environment in temperature range, and superhydrophobic property does not change.
The preparation method of super-hydrophobic polystyrene film of the present invention comprises the steps:
(1), choose fresh taro leaves and be cut into suitable size, water rinses out the dust of fresh taro leaf surface, with fresh taro leaves be positioned over the corresponding casting mold of taro leaves length and width in as primary template;
(2), with the catalyzer (benzoyl peroxide) of polydimethylsiloxane (PDMS) performed polymer and it and linking agent (Diisopropyl azodicarboxylate) by the mixed of mass ratio 100: 0.1～2: 1～10 and stirred 5～10 minutes, place then in the vacuum chamber bubble of mixture is extracted out, again polydimethylsiloxane (PDMS) is cast on the fresh taro leaves in the mould and in the atmosphere at room temperature environment, solidifies after 18～30 hours the polydimethylsiloxane (PDMS) of tearing gently on the taro leaves, obtain polydimethylsiloxane (PDMS) soft template;
(3), polydimethylsiloxane (PDMS) soft template is placed in the mould, with concentration is that polystyrene-tetrahydrofuran solution of 1～70mg/ml is cast on polydimethylsiloxane (PDMS) soft template, and the polystyrene film of in the atmosphere at room temperature environment, tearing gently after dry 8～12 hours, the gained film is super-hydrophobic polystyrene film.
The used primary template of the present invention is: fresh taro leaves.
The used soft template of the present invention is: polydimethylsiloxane (PDMS) template.
Used polystyrene-tetrahydrofuran solution the concentration of the present invention is: 1～70mg/ml.
Preparation method's operating procedure of the Polystyrene Film with super-hydrophobicity of the present invention is simple, favorable reproducibility, need not any expensive device, also do not need the complex chemical treatment process, has good industrial applications prospect.
Super-hydrophobic polystyrene film of the present invention is tasteless nontoxic, and is environmentally friendly, and field such as carry in the liquid free of losses, waterproof and dampproof has wide practical use.
Description of drawings
Fig. 1 is the sem photograph of the taro foliate super-hydrophobic polystyrene film of the embodiment of the invention 1 acquisition;
Fig. 2 is the contact angle test pattern of the taro of the embodiment of the invention 1 acquisition lobate super-hydrophobic polystyrene film surface and water.
Embodiment
Can further be expressly understood the present invention by specific embodiments of the invention given below, but following embodiment is not a limitation of the invention.
Embodiment 1:
The first step: after with tap water the dust of fresh taro leaf surface being rinsed well the taro leaves cutting grown into 15cm, widely be the 10cm size, and to put into highly be that the casting mold of 5cm is stand-by;
Second step: with the catalyzer benzoyl peroxide of polydimethylsiloxane (PDMS) performed polymer and it and linking agent Diisopropyl azodicarboxylate by 100: 1: 5 mass ratio mixing and stirred 5 minutes, place then in the vacuum chamber bubble of mixture is extracted out, again PDMS is cast on the fresh taro leaves in the mould and in the atmosphere at room temperature environment, solidifies after 24 hours the PDMS that tears gently on the taro leaves, obtain the PDMS soft template;
The 3rd step: polydimethylsiloxane (PDMS) soft template is placed highly in the mould of 5.1cm, with concentration is that polystyrene-tetrahydrofuran solution of 20mg/ml is cast on polydimethylsiloxane (PDMS) template, and the polystyrene film of in the atmosphere at room temperature environment, tearing gently after dry 10 hours, the gained film is super-hydrophobic polystyrene film.Referring to Fig. 1 and Fig. 2, with the wettability that OCA20 contact angle tester is tested this film surface, the result shows that the contact angle of this surface and water is 158 ± 1.6 °, water droplet in the roll angle of material surface less than 5 °.Film surface appearance is observed with the HITACHIS-3000N scanning electron microscope, finds this film and taro leaves surface tissue basically identical.
Embodiment 2:
The first step: after with tap water the dust of fresh taro leaf surface being rinsed well the taro leaves cutting grown into 15cm, widely be the 10cm size, and to put into highly be that the casting mold of 5cm is stand-by;
Second step: with the catalyzer benzoyl peroxide of polydimethylsiloxane (PDMS) performed polymer and it and linking agent Diisopropyl azodicarboxylate by 100: 0.1: 10 mass ratio mixing and stirred 10 minutes, place then in the vacuum chamber bubble of mixture is extracted out, again PDMS is cast on the fresh taro leaves in the mould and in the atmosphere at room temperature environment, solidifies after 18 hours the PDMS that tears gently on the taro leaves, obtain the PDMS soft template;
The 3rd step: polydimethylsiloxane (PDMS) soft template is placed highly in the mould of 5.1cm, with concentration is that polystyrene-tetrahydrofuran solution of 1mg/ml is cast on polydimethylsiloxane (PDMS) template, and the polystyrene film of in the atmosphere at room temperature environment, tearing gently after dry 8 hours, the gained film is super-hydrophobic polystyrene film.With the wettability that OCA20 contact angle tester is tested this film surface, the result shows that the contact angle of this surface and water is 150 ± 1.6 °, water droplet in the roll angle of material surface less than 5 °.Film surface appearance is observed with the HITACHIS-3000N scanning electron microscope, finds this film and taro leaves surface tissue basically identical.
Embodiment 3:
The first step: after with tap water the dust of fresh taro leaf surface being rinsed well the taro leaves cutting grown into 15cm, widely be the 10cm size, and to put into highly be that the casting mold of 5cm is stand-by;
Second step: with the catalyzer benzoyl peroxide of polydimethylsiloxane (PDMS) performed polymer and it and linking agent Diisopropyl azodicarboxylate by 100: 2: 1 mass ratio mixing and stirred 8 minutes, place then in the vacuum chamber bubble of mixture is extracted out, again PDMS is cast on the fresh taro leaves in the mould and in the atmosphere at room temperature environment, solidifies after 30 hours the PDMS that tears gently on the taro leaves, obtain the PDMS soft template;
The 3rd step: polydimethylsiloxane (PDMS) soft template is placed highly in the mould of 5.1cm, with concentration is that polystyrene-tetrahydrofuran solution of 70mg/ml is cast on polydimethylsiloxane (PDMS) template, and the polystyrene film of in the atmosphere at room temperature environment, tearing gently after dry 12 hours, the gained film is super-hydrophobic polystyrene film.With the wettability that OCA20 contact angle tester is tested this film surface, the result shows that the contact angle of this surface and water is 150 ± 1.6 °, water droplet in the roll angle of material surface less than 5 °.Film surface appearance is observed with the HITACHIS-3000N scanning electron microscope, finds this film and taro leaves surface tissue basically identical.
Embodiment 4:
The first step: after with tap water the dust of fresh taro leaf surface being rinsed well the taro leaves cutting grown into 15cm, widely be the 10cm size, and to put into highly be that the casting mold of 5cm is stand-by;
Second step: with the catalyzer benzoyl peroxide of polydimethylsiloxane (PDMS) performed polymer and it and linking agent Diisopropyl azodicarboxylate by 100: 1: 1 mass ratio mixing and stirred 5 minutes, place then in the vacuum chamber bubble of mixture is extracted out, again PDMS is cast on the fresh taro leaves in the mould and in the atmosphere at room temperature environment, solidifies after 20 hours the PDMS that tears gently on the taro leaves, obtain the PDMS soft template;
The 3rd step: polydimethylsiloxane (PDMS) soft template is placed highly in the mould of 5.1cm, with concentration is that polystyrene-tetrahydrofuran solution of 50mg/ml is cast on polydimethylsiloxane (PDMS) template, and the polystyrene film of in the atmosphere at room temperature environment, tearing gently after dry 10 hours, the gained film is super-hydrophobic polystyrene film.With the wettability that OCA20 contact angle tester is tested this film surface, the result shows that the contact angle of this surface and water is 155 ± 1.4 °, water droplet in the roll angle of material surface less than 5 °.Film surface appearance is observed with the HITACHIS-3000N scanning electron microscope, finds this film and taro leaves surface tissue basically identical.
Embodiment 5:
The first step: after with tap water the dust of fresh taro leaf surface being rinsed well the taro leaves cutting grown into 15cm, widely be the 10cm size, and to put into highly be that the casting mold of 5cm is stand-by;
Second step: with the catalyzer benzoyl peroxide of polydimethylsiloxane (PDMS) performed polymer and it and linking agent Diisopropyl azodicarboxylate by 100: 0.5: 8 mass ratio mixing and stirred 10 minutes, place then in the vacuum chamber bubble of mixture is extracted out, again PDMS is cast on the fresh taro leaves in the mould and in the atmosphere at room temperature environment, solidifies after 24 hours the PDMS that tears gently on the taro leaves, obtain the PDMS soft template;
The 3rd step: polydimethylsiloxane (PDMS) soft template is placed highly in the mould of 5.1cm, with concentration is that polystyrene-tetrahydrofuran solution of 10mg/ml is cast on polydimethylsiloxane (PDMS) template, and the polystyrene film of in the atmosphere at room temperature environment, tearing gently after dry 8 hours, the gained film is super-hydrophobic polystyrene film.With the wettability that OCA20 contact angle tester is tested this film surface, the result shows that the contact angle of this surface and water is 152 ± 1.6 °, water droplet in the roll angle of material surface less than 5 °.Film surface appearance is observed with the HITACHIS-3000N scanning electron microscope, finds this film and taro leaves surface tissue basically identical.
Claims (3)
1. super-hydrophobic polystyrene film, it is characterized in that: described film is a white film, the film surface similar is in the surface tissue of natural taro leaves, the contact angle of film and water between 150 °～160 °, water droplet in the roll angle of film surface less than 5 °.
2. prepare the method for the described super-hydrophobic polystyrene film of claim 1, it is characterized by: preparation process comprises:
(1), choose fresh taro leaves and be cut into suitable size, water rinses out the dust of fresh taro leaf surface, with fresh taro leaves be positioned over the corresponding casting mold of taro leaves length and width in as primary template;
(2), with polydimethylsiloxane performed polymer and its catalyzer and linking agent by the mixed of mass ratio 100: 0.1～2: 1～10 and stirred 5～10 minutes, place then in the vacuum chamber bubble of mixture is extracted out, again polydimethylsiloxane is cast on the fresh taro leaves in the mould and in the atmosphere at room temperature environment, solidifies after 18～30 hours the polydimethylsiloxane (PDMS) of tearing gently on the taro leaves, obtain the polydimethylsiloxane soft template;
(3), the polydimethylsiloxane soft template is placed in the mould, with concentration is that polystyrene-tetrahydrofuran solution of 1～70mg/ml is cast on the polydimethylsiloxane soft template, and the polystyrene film of in the atmosphere at room temperature environment, tearing gently after dry 8～12 hours, the gained film is super-hydrophobic polystyrene film.
3. the preparation method of super-hydrophobic polystyrene film according to claim 2, it is characterized in that: described catalyzer is a benzoyl peroxide, described linking agent is a Diisopropyl azodicarboxylate.
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| CN102582009A (en) * | 2011-12-31 | 2012-07-18 | 浙江工业大学 | Method for preparing polymer-based oriented superhydrophobic material |
| CN102746580A (en) * | 2012-07-25 | 2012-10-24 | 昌源集团有限公司 | Superhydrophobic polypropylene film and preparation method thereof |
| CN101903174B (en) * | 2008-08-11 | 2014-04-02 | 北京大学 | Superhydrophobic poly(dimethylsiloxane) and methods for making the same |
| CN103814428A (en) * | 2011-07-22 | 2014-05-21 | 全南大学校产学协力团 | Method for manufacturing a superhydrophobic film sheet |
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| JP2005343016A (en) * | 2004-06-03 | 2005-12-15 | Nippon Sheet Glass Co Ltd | Water super-repellent film-coated article |
| CN100412115C (en) * | 2005-04-20 | 2008-08-20 | 中国科学院化学研究所 | Ultra-hydrophobic polymer thin film and its production |
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- 2007-11-23 CN CN200710192405XA patent/CN101157767B/en not_active Expired - Fee Related
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| CN101903174B (en) * | 2008-08-11 | 2014-04-02 | 北京大学 | Superhydrophobic poly(dimethylsiloxane) and methods for making the same |
| CN103814428B (en) * | 2011-07-22 | 2016-05-11 | 全南大学校产学协力团 | The preparation method of based superhydrophobic thin films sheet material |
| CN103814428A (en) * | 2011-07-22 | 2014-05-21 | 全南大学校产学协力团 | Method for manufacturing a superhydrophobic film sheet |
| EP2736066A2 (en) * | 2011-07-22 | 2014-05-28 | Industry Foundation Of Chonnam National University | Method for manufacturing a superhydrophobic film sheet |
| EP2736066A4 (en) * | 2011-07-22 | 2015-03-18 | Univ Nat Chonnam Ind Found | Method for manufacturing a superhydrophobic film sheet |
| CN102582009B (en) * | 2011-12-31 | 2014-05-14 | 浙江工业大学 | Method for preparing polymer-based oriented superhydrophobic material |
| CN102582009A (en) * | 2011-12-31 | 2012-07-18 | 浙江工业大学 | Method for preparing polymer-based oriented superhydrophobic material |
| CN102746580A (en) * | 2012-07-25 | 2012-10-24 | 昌源集团有限公司 | Superhydrophobic polypropylene film and preparation method thereof |
| CN104311856A (en) * | 2014-11-19 | 2015-01-28 | 东莞市汇林包装有限公司 | Method for preparing super-hydrophobic polyinyl alcohol thin film and a material of super-hydrophobic polyinyl alcohol thin film |
| CN104673004A (en) * | 2015-03-22 | 2015-06-03 | 河北工业大学 | Organic macromolecular polymer super-hydrophobic paint and application thereof |
| CN104673004B (en) * | 2015-03-22 | 2016-10-12 | 河北工业大学 | A kind of organic high molecular polymer super hydrophobic coating and application thereof |
| CN105001441A (en) * | 2015-08-13 | 2015-10-28 | 东莞市泰和塑胶制品有限公司 | Porous and super-hydrophobic LDPE (low-density polyethylene) film and preparation method thereof |
| CN105001441B (en) * | 2015-08-13 | 2018-10-02 | 东莞市泰和塑胶制品有限公司 | Porous super hydrophobic low-density polyethylene film and preparation method thereof |
| CN113425022A (en) * | 2020-04-03 | 2021-09-24 | 中杭监测技术研究院有限公司 | Preparation method of bionic plant leaf micro-nano structure and performance of wood/bamboo-based furniture decorative material surface morphism method |
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| CN115894079B (en) * | 2022-11-14 | 2024-01-26 | 季华实验室 | Polystyrene microsphere membrane and preparation method and application thereof |
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