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RealDrop?/TrueDrop?接觸角/水滴角測量儀基于sessile drop法的接觸角測量是表征材料表面潤濕性的核心方法

2025-2-25 9:18:31
基于sessile drop法的接觸角測量是表征材料表面潤濕性的核心方法，其基本原理和常規(guī)方法可綜合如下：
一、RealDrop®/TrueDrop®接觸角/水滴角測量儀的sessile drop法基本原理
sessile drop法通過分析固-液-氣三相接觸點(diǎn)形成的平衡液滴幾何形狀，測量接觸角以評估表面潤濕性。其理論依據(jù)為楊氏方程，即接觸角（θ）由固-氣（γ??）、固-液（γ??）和液-氣（γ??）界面張力的平衡關(guān)系決定：
\cos\theta = \frac{\gamma_{sv} - \gamma_{sl}}{\gamma_{lv}}
液滴形狀受重力、表面張力和固體表面性質(zhì)的共同作用，通過光學(xué)成像或三維重建（如μCT）獲取輪廓參數(shù)（如液滴高度、基底半徑）后，結(jié)合Young-Laplace方程計(jì)算接觸角。
二、RealDrop®/TrueDrop®接觸角/水滴角測量儀的常規(guī)實(shí)驗(yàn)方法
1. 設(shè)備配置
- 核心儀器為測角儀（如TrueDrop®/RealDrop®接觸角及水滴角測量儀），配備高分辨率攝像頭和控溫系統(tǒng)。
- 液滴體積控制：微量注射器精準(zhǔn)釋放2-10 μL液體（如水、二碘甲烷等），減少重力對微小液滴形狀的影響。
- 表面預(yù)處理：樣品需拋光至特定粗糙度（Ra值通常<1 μm），避免表面形貌干擾接觸角測量。
2. 測量模式
- 靜態(tài)接觸角：液滴沉積后靜置至平衡狀態(tài)（通常1-2分鐘），通過切線法或橢圓擬合分析接觸角。
- 動(dòng)態(tài)接觸角：測量前進(jìn)角（ACA）和后退角（RCA），通過傾斜臺法或液滴體積增減法評估接觸角滯后。
- 高溫/高壓適配：密閉腔體配合溫控模塊，可擴(kuò)展至非標(biāo)準(zhǔn)環(huán)境（如熔融金屬表面張力測量）。
3. 數(shù)據(jù)處理與模型
- 表面自由能計(jì)算：聯(lián)合使用水（極性）和二碘甲烷（非極性）的接觸角數(shù)據(jù)，通過Owens-Wendt-Rabel-Kaelble（OWRK）模型分解表面能的極性與色散分量。
- 三維重構(gòu)技術(shù)：μCT掃描獲取液滴三維形態(tài)，通過高度和體積參數(shù)間接計(jì)算接觸角，相比傳統(tǒng)光學(xué)法減少局部輪廓波動(dòng)引起的誤差。
- 自動(dòng)化分析：圖像處理算法（如多項(xiàng)式擬合）優(yōu)化接觸角提取精度，對θ<90°和θ>90°的液滴分別提升21%和33%的測量準(zhǔn)確度。
三、RealDrop®/TrueDrop®接觸角/水滴角測量儀測試時(shí)的Sessile drop方法比較與局限性
1. 與傳統(tǒng)方法對比
- 相較于懸滴法（pendant drop）直接測量液-氣界面張力，sessile drop法更適用于固體表面潤濕性評估，但對超疏水表面（θ>150°）需采用毛細(xì)橋探針法等特殊技術(shù)。
- 浸濕熱法（heat of immersion）在區(qū)分顆粒潤濕性時(shí)可能更靈敏，但sessile drop法因非破壞性和易操作性仍是主流。
2. 誤差來源
- 接觸線釘扎：蒸發(fā)過程中液滴基底半徑變化導(dǎo)致CCR（恒定接觸半徑）與CCA（恒定接觸角）模式轉(zhuǎn)換，需通過環(huán)境濕度控制（>60% RH）抑制蒸發(fā)干擾。
- 光學(xué)畸變：非垂直拍攝角度可引起接觸角測量偏差，當(dāng)真實(shí)接觸角為5°或175°時(shí)，絕對誤差可達(dá)±20°。
- 表面異質(zhì)性：化學(xué)修飾（如硅烷化）或粗糙度分布不均會(huì)導(dǎo)致接觸角分布展寬，需結(jié)合流電勢分析或X射線反射率驗(yàn)證表面均勻性。
四、RealDrop®/TrueDrop®接觸角/水滴角測量儀的新興技術(shù)拓展
1. 動(dòng)態(tài)潤濕分析：結(jié)合Lattice-Boltzmann數(shù)值模擬，預(yù)測液滴在非均質(zhì)表面的鋪展動(dòng)力學(xué)，與實(shí)驗(yàn)測量的接觸角誤差<5%。
2. 軟物質(zhì)界面：通過調(diào)節(jié)基底粘彈性（損耗模量變化1個(gè)數(shù)量級），實(shí)現(xiàn)蒸發(fā)模式從CCR到CCA的可控切換。
3. 微觀機(jī)理關(guān)聯(lián)：同步測量納米顆粒（NP）在宏觀基底的接觸角與液-氣界面吸附量，揭示潤濕性對乳液穩(wěn)定的調(diào)控機(jī)制。
以上方法廣泛應(yīng)用于材料科學(xué)（如牙科樹脂潤濕性優(yōu)化）、能源工程（瀝青-骨料界面粘附評估）等領(lǐng)域，其標(biāo)準(zhǔn)化操作流程和誤差控制策略對確保數(shù)據(jù)可靠性至關(guān)重要。
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參考文獻(xiàn)(41) :
1. Bioactivation of 3D Cell-Imprinted Polydimethylsiloxane Surfaces by Bone Protein Nanocoating for Bone Tissue Engineering.
2. Determination of Sessile Drop Wetting Angle Based on μCT without the Direct Angle Measurement.
3. Evaluation of surface tensions and root-dentin surface contact angles of different endodontic irrigation solutions.
4. The Liquid Young's Law on SLIPS: Liquid-Liquid Interfacial Tensions and Zisman Plots.
5. Investigation of correlations between powder functionalities and powder surface properties for milk protein ingredients.
6. Evaluation of surface roughness, wettability and adhesion of multispecies biofilm on 3D-printed resins for the base and teeth of complete dentures.
7. Application of the Lattice-Boltzmann method to wetting on anisotropic textured surfaces: Characterization of the liquid-solid interface.
8. Evaporation Dynamics of Surfactant-Laden Droplets on a Superhydrophobic Surface: Influence of Surfactant Concentration.
9. Deep Learning to Analyze Sliding Drops.
10. Further Exploration of Heat of Immersion as a Method to Quantify Wettability for Particulates: Effect of Temperature.
11. Effects of UV Postcuring Times on the Color Stability, Surface Properties and Conversion of 3D-printed Temporary Resin Composites.
12. Capillary Bridges on Hydrophobic Surfaces: Analytical Contact Angle Determination.
13. Antifungal Activities and Some Surface Characteristics of Denture Soft Liners Containing Silicon Dioxide Nanoparticles.
14. Adsorption Properties and Wettability of Ethoxy- and Propoxy- Derivatives of 2-Ethylhexanol as Sterically Specific Surfactant Structures.
15. State-and-rate friction in contact-line dynamics.
16. Hansen Solubility Parameters for Directly Dealing with Surface and Interfacial Phenomena.
17. Contact Angle Measurement on Curved Wetting Surfaces in Multiphase Lattice Boltzmann Method.
18. Influence of Selected Ophthalmic Fluids on the Wettability and Hydration of Hydrogel and Silicone Hydrogel Contact Lenses-In Vitro Study.
19. Using Different Surface Energy Models to Assess the Interactions between Antiviral Coating Films and phi6 Model Virus.
20. Effect of Surfactants on Eliminating Stable Ultrafine Chalcopyrite Froth.
21. Understanding the Role of Loss Modulus of Viscoelastic Substrates in the Evaporation Dynamics of Sessile Drops.
22. Effect of Camera Parallax Angle on the Accuracy of Static Contact Angle Measurements.
23. Effect of a novel irrigation regimen and root canal filling material versus conventional endodontic protocols on dentin wettability.
24. Study on Surface Roughness, Morphology, and Wettability of Laser-Modified Powder Metallurgy-Processed Ti-Graphite Composite Intended for Dental Application.
25. Systematic Study of Wettability Alteration of Glass Surfaces by Dichlorooctamethyltetrasiloxane Silanization-A Guide for Contact Angle Modification.
26. Assessment of nanoparticle immersion depth at liquid interfaces from chemically equivalent macroscopic surfaces.
27. Measuring Colloidal Forces With Atomic Force Microscopy 1: Salt Influence on Hydrophobic and Hydrophilic Interactions.
28. Effect of trialkoxysilane/aminosilane-containing universal adhesive on resin-ceramic microtensile bond strength and ceramic wettability: An in-vitro study.
29. Effect of layer thickness and printing orientation on the color stability and stainability of a 3D-printed resin material.
30. Triple-line dynamics of a soft colloid-laden drop on a hydrophobic surface.
31. Effect of non-thermal plasma treatment and resin cements on the bond strength of zirconia ceramics with different yttria concentrations.
32. The effect of surface roughness on capillary rise in micro-grooves.
33. Osteoblastic and Bacterial Response of Hybrid Dental Implants.
34. Polarity-Induced Reactive Wetting: Spreading and Retracting Sessile Water Drops.
35. Antimicrobial efficacy and topographical alterations of photodynamic therapy versus conventional antimicrobials on contaminated zirconia ceramic in vitro.
36. The Effect of Trace Oxygen Addition on the Interface Behavior of Low-Alloy Steel.
37. Influence of the Ground Electrode on the Dynamics of Electrowetting.
38. Capillary Assembly of Anisotropic Particles at Cylindrical Fluid-Fluid Interfaces.
39. Research on the Adhesion Properties of Fast-Melting SBS-Modified Asphalt-Aggregate Based on Surface Free Energy Theory.
40. Evaluation of surface characterization and mechanical features of resin-matrix ceramics before and after different surface treatments.
41. Is contact-line mobility a material parameter?
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