CN107561080B - A kind of dynamic characterization method of micro-nano cellulose - Google Patents
A kind of dynamic characterization method of micro-nano cellulose Download PDFInfo
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- CN107561080B CN107561080B CN201710574739.7A CN201710574739A CN107561080B CN 107561080 B CN107561080 B CN 107561080B CN 201710574739 A CN201710574739 A CN 201710574739A CN 107561080 B CN107561080 B CN 107561080B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/85—Investigating moving fluids or granular solids
Abstract
The invention discloses a kind of dynamic characterization method of micro-nano cellulose, include the following steps: that the impractical liquid of micro-nano cellulose is carried out intermittent ultrasonic treatment by (1)；(2) injection is by step (1) treated micro-nano cellulose suspension；(3) microscopical object lens are adjusted to guarantee microchannel in the microscopical visual field and the microchannel is one and is clearly imaged；(4) using the micro-nano cellulose in the direct-connected CCD camera shooting microchannel of microscope；(5) photo that CCD camera is shot is transmitted in computer and handles image data, be distinguished them according to the pixel particles gray scale difference of nano-cellulose particle on image and moisture；The present invention uses Particle tracking velocity measuring technique, is analyzed to obtain the important parameters such as length, diameter, speed, the quantity of nano-cellulose according to the image real time transfer that CCD takes.
Description
Technical field
The present invention relates to the micro nanometer fiber materials of the representational field of the nanofiber of flexible material, especially plant origin
The characterizing method of material
Background technique
Micro-nano cellulose has excellent property, environmentally protective, natural reproducible, biocompatibility, while also having
Excellent optical property and mechanical performance.Currently, micro nanometer fiber cellulosic material has been applied in all trades and professions, such as cosmetics, life
, there is very huge application prospect in the fields such as object medicine, building, food, military project, papermaking, environmental protection.
The characterizing method of research micro-nano cellulose includes: TEM/SEM Electronic Speculum, AFM (atomic force microscope), DLS at present
(dynamic light scattering technique) etc..The disadvantages of time-consuming for these existing methods, sample preparation is complicated, operation is difficult.
Summary of the invention
The shortcomings that it is a primary object of the present invention to overcome the prior art and deficiency, provide a kind of table of micro-nano cellulose
Sign method, the characterizing method use existing Particle tracking velocity measuring technique, are observed under the microscope by CCD camera shooting
Nano-cellulose in microchannel is analyzed to obtain the length of nano-cellulose according to the image real time transfer that CCD camera takes
Degree, diameter, speed, the important parameters such as quantity.
In order to achieve the above object, the invention adopts the following technical scheme:
The present invention provides a kind of dynamic characterization methods of micro-nano cellulose, include the following steps:
(1) the impractical liquid of micro-nano cellulose is subjected to intermittent ultrasonic treatment, handles time 5-10min, time interval 3S；
(2) inject that pass through that step (1) treated micro-nano into micro/nano level other microchannel using micro-syringe
Cellulose suspension；
(3) microscopical object lens are adjusted to guarantee microchannel in the microscopical visual field and the microchannel is one clear
Then clear imaging observes mobility status of the micro-nano cellulose in microchannel, under the microscope to confirm micro-nano fibre
Dimension element is to flow and keep certain suitable speed in the channel；
(4) micro-nano cellulose in microchannel is shot using the direct-connected CCD camera of microscope, is kept in shooting process
All positions are constant to reduce error, micro nanometer fiber in microchannel of the moving stage to measure different location after shooting
The related parameter of element；
(5) photo that CCD camera is shot is transmitted in computer and handles image data, according to nano-cellulose on image
They are distinguished by the pixel particles gray scale difference of particle and moisture；It is minimum by being drawn in micro-nano cellulose particle profile
Boundary rectangle and inscribed circle calculate the length and diameter of nano-cellulose；Pass through the center of nano-cellulose particle in multiple frame figures
Point displacement, calculates the speed of nano-cellulose particle；It flows through the quantity of nano-cellulose within a certain period of time by calculating, comes
Quantity is counted.
Step (1) as a preferred technical solution, specifically:
The micro-nano cellulose suspension of 0.1% concentration is subjected to intermittent ultrasonic treatment, intermittent sonication treatment time
For 10min, ultrasonic treatment condition is ultrasonic time 3s, intermittent time 3s, power 300W, 0-4 DEG C of temperature.
As a preferred technical solution, in step (3), keeping the range of speed in certain suitable speed is 0-200um/
S, if needing a period of time that the speed in channel is waited to reduce not within the velocity interval.
As a preferred technical solution, in step (4), moving stage is logical come the miniflow for measuring different location after shooting
The related parameter of micro-nano cellulose in road, length, diameter, speed and number parameter including nano-cellulose.
It is specific to wrap including the method to micro-nano cellulose particle identification as a preferred technical solution, in step (5)
Include following step:
Nanofiber particle in micro-nano cellulose suspension is irradiated by light source, faint scattering light is generated, in CCD
After being imaged on camera, the profile of micro nanometer fiber is different from background, and center is partially bright, and edge is partially dark, when micro nanometer fiber particle
When moving in visual field, in continuous frame figure, micro nanometer fiber particle is constantly moved along flow field direction, and suspension
Any variation is not had with optical characteristics stabilization of the background in observation process, so the even entire view in multiple successive frame figures
In frequency, imaging of the background on CCD is constant, to identify the nanofiber particle of movement in video.
As a preferred technical solution, in step (5), the method for calculating nano-cellulose length and diameter is as follows:
In any frame image, nanofiber particle may recognize that by background difference, due to its gray value and background face
The difference of color is ticked the profile of nanofiber particle by selected gray threshold, determines wheel of the nanofiber in this frame figure
Exterior feature, and on the fiber profile draw a minimum circumscribed rectangle by micro-nano cellulose envelope including, the long side of this rectangle is
It is the length of micro-nano cellulose particle, and carrys out record length information using pixel as unit；In addition in nanofiber particle
Inscribed circle is done in profile, inscribe diameter of a circle is the diameter of the particle of nano-cellulose, and is recorded using pixel as unit
Diameter information；
The resolution ratio of the visual field size and CCD that are determined according to microscopical enlargement ratio, so that it may learn, obtain
In the image obtained, unit length how small in practice is described using a pixel, pixel unit is thus scaled length list
Position.
As a preferred technical solution, in step (5), the method for calculating micro-nano cellulose particle rapidity is as follows:
After identifying certain specific nanofiber particle, the center point of the image profiles of nano-cellulose particle is determined
It sets, in adjacent two field pictures, analyzes the change in displacement of the central point of the same fiber, to learn in specified time interval
Interior, then the movement speed of this particle is calculated in the displacement of nano-cellulose particle centre point by V=S/t at moment,
And in stable flow field, by the continuous analysis of multiple frame figures, take mean value that the mobile uniform velocity of nanofiber particle can be obtained.
As a preferred technical solution, in step (5), the method for counting micro-nano cellulose particle rapidity is as follows:
Since nanofiber is all to flow into the liquid of flowing from the side of visual field, flowed out from the other side, in Nanowire
For dimension since flowing into side, system is first in the nano-cellulose that visual field inward flange recognizes, and is identifying the Nanowire
After dimension element, each frame is all identified, and is tracked up to its other side for disappearing in visual field, and this fiber is counted as 1, thus
Analogize, while carrying out the identification tracking of multiple targets, within a certain period of time, a certain number of nano-cellulose grains will be added up
Son, system is automatically to identify that the sequence of fiber carries out label to fiber, and index methods are: what is entered in order in visual field receives
Rice cellulose is respectively labeled as 1,2,3,4...n, since 1, then terminating by the end of video, the fiber serial number of system banner
It is exactly the fiber count recognized in video.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1, the present invention can complete dynamic tracking measurement in real time to micro-nano cellulose, and time of measuring is short, the letter of processing
Breath amount is big, can not only measure the length and diameter of nano-cellulose, further includes speed and position of the nano-cellulose in flow field
Set variation；And SEM/TEM/AFM etc. above-mentioned method is all to carry out size to solid nanofibers element under static process
Measurement, in measurement is previously required to that nano-cellulose is dried；Current existing measurement method is to nano-cellulose
Measurement has the shortcomings that time-consuming, complicated for operation.And the present invention compared with existing research method with the used time it is short, operation letter
Singly, the advantages that multiple characterization parameters being obtained simultaneously.
2, the present invention can unite to the distribution situation of the parameters such as nano-cellulose radical, length, diameter in channel
Meter, this is that method in the prior art is not accomplished.
Detailed description of the invention
Fig. 1 is the flow chart of nano-cellulose dynamic characterization method of the present invention；
Fig. 2 is effect picture of the nanofiber particle of the present invention after light source irradiates；
Fig. 3 is the boundary rectangle and inscribed circle schematic diagram of nano-cellulose particle profile diagram of the present invention；
Fig. 4 is the structural schematic diagram of 2 laboratory apparatus of embodiment；
Fig. 5 is the display figure of 2 nano-cellulose of embodiment in the channel；
Fig. 6 is 2 nano-cellulose length quantity statistical chart of embodiment；
Fig. 7 is 2 nano-cellulose width quantity statistics figure of embodiment；
Fig. 8 is 2 nano-cellulose speed quantity statistical chart of embodiment.
Specific embodiment
With reference to embodiments, the present invention will be described in further detail.So that advantages and features of the invention can be more
It is easy to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.It should manage
Solution, described herein specific examples are only used to explain the present invention, is not intended to limit the present invention.
Embodiment 1
As shown in Figure 1, the dynamic characterization method of 1 micro-nano cellulose of the present embodiment, includes the following steps:
(1) the micro-nano cellulose suspension of 0.1% concentration is subjected to intermittent ultrasonic treatment, when intermittent ultrasonic treatment
Between be 30min, ultrasonic treatment condition be ultrasonic time 3s, intermittent time 3s, power 300W, 0-4 DEG C of temperature；
(2) inject that pass through that step (1) treated micro-nano into micro/nano level other microchannel using micro-syringe
Cellulose suspension；
(3) microscopical object lens are adjusted to guarantee microchannel in the microscopical visual field and the microchannel is one clear
Then clear imaging observes mobility status of the micro-nano cellulose in microchannel, under the microscope to confirm micro-nano fibre
Dimension element is to flow and keep certain suitable speed in the channel, and velocity interval is in 0-200um/s, if not in the speed model
Within enclosing, need a period of time that the speed in channel is waited to reduce；
(4) micro-nano cellulose in microchannel is shot using the direct-connected CCD camera of microscope, is kept in shooting process
All positions are constant to reduce error, micro nanometer fiber in microchannel of the moving stage to measure different location after shooting
The related parameter of element；
(5) photo that CCD camera is shot is transmitted in computer and handles image data, according to nano-cellulose on image
They are distinguished by the pixel particles gray scale difference of particle and moisture；It is minimum by being drawn in micro-nano cellulose particle profile
Boundary rectangle and inscribed circle calculate the length and diameter of nano-cellulose；Pass through the center of nano-cellulose particle in multiple frame figures
Point displacement, calculates the speed of nano-cellulose particle；It flows through the quantity of nano-cellulose within a certain period of time by calculating, comes
Quantity is counted.
It further include the method to micro-nano cellulose particle identification in step (5), specifically include the following steps:
Nanofiber particle in micro-nano cellulose suspension is irradiated by light source, generates faint scattering light, is imitated
After fruit figure in CCD camera as shown in Fig. 2, be imaged, the profile of micro nanometer fiber is different from background, and center is partially bright, and edge is inclined
Secretly, when micro nanometer fiber particle moves in visual field, in continuous frame figure, micro nanometer fiber particle is along flow field direction
Constantly move, and the optical characteristics stabilization of suspension and background in observation process does not have any variation, so at multiple
In successive frame figure in even entire video, imaging of the background on CCD is constant, to identify receiving for movement in video
Rice fibrous particle.
The method for calculating nano-cellulose length and diameter is as follows:
In any frame figure, we can identify nanofibers particle by background difference, in the picture, due to its ash
The difference of angle value and background can tick the profile of nanofiber particle by selected gray threshold, as shown in figure 3, for side
Just it observes, several times is amplified to image, pixel is more apparent.
Thus we can determine profile of the nano-cellulose in this frame figure, in order to understand the side of identification its diameter and length
Method: we need to draw a bounding rectangle and inscribed circle on the fiber profile, shown in as shown in the figure 3.
Inscribed circle is the circle for being inscribed within blue outline line, the diameter of diameter i.e. fiber.We are first made with pixel
Dimension information is recorded for unit.Illustrating inscribed diameter of a circle is approximately 3 pixels (px).
Bounding rectangle, as shown in figure 3, we draw a smallest rectangle around fiber imaging figure, by the fibre
Including tieing up envelope, and the long side of this rectangle is the length of fiber, and diagram length is about 17 pixels (px).
The resolution ratio of the visual field size and CCD that are determined according to microscopical enlargement ratio, so that it may learn, obtain
Image in, we describe unit length how small in practice with a pixel, thus can be scaled pixel unit
Length unit.
The method for calculating micro-nano cellulose particle rapidity is as follows:
Some specific nanofiber particle can be identified in video, and position is constantly moved in continuous frame figure, ginseng
The measurement method of size is examined, where the central point for determining nanofiber (profile of imaging) on this basis, in two adjacent frames
In image, the change in displacement (pixel number) of the central point of the same fiber is analyzed, to learn in specific time (frame period) fibre
Mobile distance (displacement of central point) is tieed up, the mobile speed of this particle thus can be calculated by V=S/t at moment
Degree, and in stable flow field, by the continuous analysis of multiple frame figures, take mean value that nanofiber particle can be obtained mobile at the uniform velocity
Degree.
The method for counting micro-nano cellulose particle rapidity is as follows:
Since nanofiber is all to flow into the liquid of flowing from the side of visual field, flowed out from the other side, in Nanowire
For dimension since flowing into side, system is first in the nano-cellulose that visual field inward flange recognizes, and is identifying the Nanowire
After dimension element, each frame is all identified, and is tracked up to its other side for disappearing in visual field, and this fiber is counted as 1, thus
Analogize, while carrying out the identification tracking of multiple targets, within a certain period of time, a certain number of nano-cellulose grains will be added up
Son, system is automatically to identify that the sequence of fiber carries out the label (nano-cellulose entered in order in visual field point to fiber
Biao Ji not be, 2,3,4...n), since 1, then terminating by the end of video, the fiber serial number i.e. video of system banner
In the fiber count that recognizes.
Through the above steps, the dynamic characterization to nano-cellulose of the present invention can be completed.
Embodiment 2
The dynamic characterization method of nano-cellulose of the present invention is verified with specific experiment below:
As shown in figure 4, the instrument that this experiment uses has:
NFC (nano-cellulose nanofibrils) suspension of 0.1% concentration is taken first, then carrying out between NFC suspension
Formula of having a rest is ultrasonically treated 30min, and ultrasonic treatment condition is ultrasonic time 3s, intermittent time 3s, power 300W, 0-4 DEG C of temperature, ultrasonic
Addition suspension is injected into microchannel after having handled NFC suspension.
Microscopical light source is provided by power module TH4-200, and after power supply power supply, the black for opening below the panel is opened
It closes.
Microscopical light source switch and adjusting knob are located in front of pedestal, and left side is light source switch, and right side is then light source power
Regulating switch, foundation observed case adjusts light source power in real time after opening light source.
Objective table is then adjusted in the position of XY axis direction, so that microchannel is directed at object lens when observation.
Knob is focusing knob below microscope, and the big knob in outer ring is coarse adjustment, and inward turning small knob with a scale is accurate adjustment, right
The distance between object lens and microchannel (focal length) are adjusted, to reach best observed range.
Above microscope fork shift switch for light splitting switch, when be in the leftmost side when, by all light enter eyepiece into
Row artificial observation, when in intermediate, light half gives eyepiece half and gives Computer-generated images system, when being in the rightmost side,
All light are all then entered into Computer-generated images system, can not be observed at eyepiece at this time.
When experiment starts, the micro-nano cellulose suspension of 0.1% concentration is subjected to intermittent ultrasonic treatment, it is intermittent super
The sonication time is 30min, and ultrasonic treatment condition is ultrasonic time 3s, intermittent time 3s, power 300W, 0-4 DEG C of temperature, will be surpassed
NFC suspension after sound is slowly injected into microchannel by injection system.Since high power objective is oil mirror, need first in camera lens
The upper dedicated oil droplet of drop, the imaging in channel is then found under low power objective, the imaging under low power lens is moved in the visual field
Behind centre under reconvert to high power objective, the imaging clearly under focal length to high power lens is finely tuned, as shown in Figure 5.To the suspension containing NFC
When liquid flows to the channel part of inverted microscope observation in the channel, by imaging unit to micro- on computer workstation
Visual field under mirror is shot, and is constantly calculated by the video of interception, due to not carrying out subsequent injection, in channel
Nano-cellulose speed can due to vias inner walls viscous force and constantly reduce, when the speed in visual field is dropped in about 0-
When in the range of 200um/s, then by the video of interception carry out related algorithm operation obtain nano-cellulose radical, length, diameter,
The parameters such as speed, as shown in Fig. 6, Fig. 7, Fig. 8.Fig. 6 indicates the nano-cellulose length of interval quantity in 600-2000nm point
Cloth, wherein the nano-cellulose quantity of 600-800nm is most, and the nano-cellulose quantity of 800-1000nm is second.Fig. 7 is indicated
The distribution in nano-cellulose diameter section, wherein the nano-cellulose quantity within the scope of 600-650nm is most.Fig. 8 table
Show distributed number situation of the nano-cellulose speed in 0-80um/s, wherein the nano-cellulose quantity in 20-30um/s is most
It is more.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (7)
1. a kind of dynamic characterization method of micro-nano cellulose, which is characterized in that include the following steps:
(1) micro-nano cellulose suspension is subjected to intermittent ultrasonic treatment, handles time 5-10min, time interval 3S；
(2) inject the micro nanometer fiber that passes through that step (1) treated into micro/nano level other microchannel using micro-syringe
Plain suspension；
(3) microscopical object lens are adjusted guarantee microchannel in the microscopical visual field and the microchannel be one clearly
Then imaging observes mobility status of the micro-nano cellulose in microchannel, under the microscope to confirm micro-nano cellulose
It is to flow and keep certain suitable speed in the channel；
(4) micro-nano cellulose in microchannel is shot using the direct-connected CCD camera of microscope, keeps all in shooting process
Position is constant to reduce error, micro-nano cellulose in microchannel of the moving stage to measure different location after shooting
Related parameter；
(5) photo that CCD camera is shot is transmitted in computer and handles image data, according to micro-nano cellulose on image with
They are distinguished by the pixel particles gray scale difference of moisture；By micro-nano cellulose profile draw minimum circumscribed rectangle and
The length and diameter of inscribed circle calculating micro-nano cellulose；Pass through the central point displacement of micro-nano cellulose in multiple frame figures, meter
Calculate the speed of micro-nano cellulose；Flow through the quantity of micro-nano cellulose within a certain period of time by calculating, to quantity into
Row statistics；
In step (5), including method for distinguishing is known to micro-nano cellulose, specifically include the following steps:
Micro-nano cellulose in micro-nano cellulose suspension is irradiated by light source, faint scattering light is generated, in CCD camera
After upper imaging, the profile of micro-nano cellulose is different from background, and center is partially bright, and edge is partially dark, when micro-nano cellulose is regarding
In when moving, in continuous frame figure, micro-nano cellulose is constantly moved along flow field direction, and suspension and background
Optical characteristics stabilization in observation process does not have any variation, so in multiple successive frame figures in even entire video,
Imaging of the background on CCD is constant, to identify the micro-nano cellulose of movement in video.
2. the dynamic characterization method of micro-nano cellulose according to claim 1, which is characterized in that step (1) specifically:
The micro-nano cellulose suspension of 0.1% concentration is subjected to intermittent ultrasonic treatment, intermittent sonication treatment time is
10min, ultrasonic treatment condition be ultrasonic time 3s, intermittent time 3s, power 300W, 0-4 DEG C of temperature.
3. the dynamic characterization method of micro-nano cellulose according to claim 1, which is characterized in that in step (3), keep one
The range of speed is 0-200um/s in fixed suitable speed, if needing a period of time to wait not within the velocity interval
Speed in channel reduces.
4. the dynamic characterization method of micro-nano cellulose according to claim 1, which is characterized in that in step (4), shot
Afterwards in microchannel of the moving stage to measure different location micro-nano cellulose related parameter, including micro-nano cellulose
Length, diameter, speed and number parameter.
5. the dynamic characterization method of micro-nano cellulose according to claim 1, which is characterized in that in step (5), calculate micro-
The method of nano-cellulose length and diameter is as follows:
In any frame image, micro-nano cellulose may recognize that by background difference, due to its gray value and background color
Difference is ticked the profile of micro-nano cellulose by selected gray threshold, determines wheel of the micro-nano cellulose in this frame figure
Exterior feature, and on the profile of the micro-nano cellulose draw a minimum circumscribed rectangle for including micro-nano cellulose envelope, this square
The long side of shape is the length of micro-nano cellulose, and carrys out record length information using pixel as unit；In addition in micro-nano fibre
It ties up in the profile of element and does inscribed circle, inscribe diameter of a circle is the diameter of micro-nano cellulose, and is remembered using pixel as unit
Record diameter information；
The resolution ratio of the visual field size and CCD that are determined according to microscopical enlargement ratio, so that it may learn, acquired
In image, unit length how small in practice is described using a pixel, pixel unit is thus scaled length unit.
6. the dynamic characterization method of micro-nano cellulose according to claim 1, which is characterized in that in step (5), calculate micro-
The method of nano-cellulose speed is as follows:
After identifying certain specific micro-nano cellulose, the center position of the image profiles of micro-nano cellulose is determined,
In adjacent two field pictures, the change in displacement of the central point of the same micro-nano cellulose is analyzed, to learn in specific time
In interval, then this moment micro-nano cellulose is calculated by V=S/t in the displacement of micro-nano cellulose central point
Movement speed, and in stable flow field, by the continuous analysis of multiple frame figures, take mean value that micro-nano cellulose shifting can be obtained
Dynamic uniform velocity.
7. the dynamic characterization method of micro-nano cellulose according to claim 1, which is characterized in that in step (5), count micro-
The method of nano-cellulose speed is as follows:
Since micro-nano cellulose is all to flow into the liquid of flowing from the side of visual field, flowed out from the other side, micro-nano
For cellulose since flowing into side, system is first in the micro-nano cellulose that visual field inward flange recognizes, and is somebody's turn to do in identification
After micro-nano cellulose, each frame is all identified, and is tracked until its other side for disappearing in visual field, and by this micro-nano fibre
Dimension element is counted as 1, and by parity of reasoning, while carrying out the identification tracking of multiple targets, within a certain period of time, will add up a fixed number
The micro-nano cellulose of amount, system is automatically to identify that the sequence of micro-nano cellulose carries out label, mark to micro-nano cellulose
Number method is: the micro-nano cellulose entered in order in visual field is respectively labeled as 1,2,3,4...n, since 1, then cutting
Only terminate to video, the micro nanometer fiber prime number recognized in the micro-nano cellulose serial number i.e. video of system banner.
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| CN201710574739.7A CN107561080B (en) | 2017-07-14 | 2017-07-14 | A kind of dynamic characterization method of micro-nano cellulose |
| CA3050806A CA3050806C (en) | 2017-07-14 | 2017-11-23 | Dynamic characterization method for micro-nano celluloses |
| PCT/CN2017/112637 WO2019010897A1 (en) | 2017-07-14 | 2017-11-23 | Dynamic characterization method for micro-nano celluloses |
| SG11201906929WA SG11201906929WA (en) | 2017-07-14 | 2017-11-23 | A dynamic characterization method for micro-nanocellulose |
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| CN108548768A (en) * | 2018-05-10 | 2018-09-18 | 华南理工大学 | A kind of dynamic characterization method of the micro-nano granules suspension based on image processing techniques |
| CN108627488A (en) * | 2018-05-24 | 2018-10-09 | 华南理工大学 | A kind of novel characterizing method to fluorescence CNC |
| CN109682818A (en) * | 2019-02-28 | 2019-04-26 | 华南理工大学 | A kind of device and method of real-time measurement cellulose or lignin material bulking coefficient |
| CN111692981A (en) * | 2020-06-22 | 2020-09-22 | 重庆国际复合材料股份有限公司 | Fiber diameter rapid measurement method and measurement system |
| CN112697068A (en) * | 2020-12-11 | 2021-04-23 | 中国计量大学 | Method for measuring length of bubble of tubular level bubble |
| CN115308210A (en) * | 2022-08-19 | 2022-11-08 | 珠海华伦造纸科技有限公司 | System and method for rapidly measuring morphological parameters of papermaking fibers |
| CN115597507A (en) * | 2022-10-27 | 2023-01-13 | 中钢集团郑州金属制品研究院股份有限公司（Cn） | Diameter detection method of synthetic fiber |
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-
2017
- 2017-07-14 CN CN201710574739.7A patent/CN107561080B/en active Active
- 2017-11-23 WO PCT/CN2017/112637 patent/WO2019010897A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| SG11201906929WA (en) | 2019-08-27 |
| WO2019010897A1 (en) | 2019-01-17 |
| CN107561080A (en) | 2018-01-09 |
| CA3050806A1 (en) | 2019-01-17 |
| CA3050806C (en) | 2021-06-01 |
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