CN105088376A - High interface adhesion strength nanofiber composite filament bundle and preparation method and application thereof - Google Patents
High interface adhesion strength nanofiber composite filament bundle and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a high interface adhesion strength nanofiber composite filament bundle and a preparation method and application thereof. The preparation method comprises the following steps: 1, preparing a spinning solution with polymer, additives and solvent, wherein the polymer comprises one or more ingredients out of cellulose diacetate, cellulose triacetate, hydroxyethyl cellulose, polyving akohol and polyving akohol, and the additives comprise one or more ingredients out of ethanediol, glycerol, pentaerythritol, diacetin, glycerol triacetate, glycerol trioleate, glycerol palmitate and glyceryl stearate; 2, taking a cigarette-used filament bundle as base materials, conducting electrostatic spinning on the spinning solution which is obtained in step 1, and obtaining the high interface adhesion strength nanofiber composite filament bundle. By means of the high interface adhesion strength nanofiber composite filament bundle, the phenol release amount and NNK release amount in mainstream smoke of a cigarette can be effectively reduced, the phenol release amount is reduced by 16-30%, and the NNK release amount is reduced by 12-36%.
Description
Technical field
The present invention relates to technical field of cigarettes, be specifically related to a kind of high interfacial-adhesion strength nanofiber compound tow and its preparation method and application.
Background technology
On cigarette, tipped with filters is that the most direct effective means in burnt technology fall in current Harm reduction techniques, filter tip can adsorb the part harmful components in cigarette smoke, as retained total particulate matter in cigarette mainstream flue gas, reducing tar content, adsorb harmful components, thus reduce the harm to human body.
The filter tip generally used at present is prepared from by cellulose acetate tow or polypropylene tows, the sectional dimension of these tow is generally some tens of pm, by introducing nano particle, increasing the specific area that the methods such as roughness can improve filter tip further, thus strengthen the ability of filter stick adsorb harmful components.Such as, publication number is that the patent of invention document of CN101484628A discloses a kind of method that the nano materials such as nanotube are adhered to or are trapped in tow, can be improved the ability of tow adsorb harmful components by this modification.
Electrostatic spinning is a kind of technology preparing nanofiber simply and easily, and nanofiber widely, is introduced in filter tip by applicable material ranges and Application Areas, can significantly improve specific area, strengthens adsorption capacity.Publication number is that the patent of invention document of CN1603036 discloses a kind of method utilizing electrostatic spinning nano staple fibre and existing filter stick tow directly to mix to increase filter area; Publication number is that the patent of invention document of CN102423141 then first obtains nano fibrous membrane, is then embedded between original filter tip and cigarette and makes composite filter tip, reduce the content of tar and other harmful substances.Recently, publication number is that the patent of invention document of CN103628253 is by Electrospun nano-fibers and tow direct combination, namely direct using tow as base material, nanofiber compound tow is directly formed in electrostatic spinning process, be used further to filter tip make, discovery effectively can reduce the burst size of some harmful substances in cigarette mainstream flue gas, and does not affect the sucking quality of cigarette.
Utilize method of electrostatic spinning directly prepare the efficient height of nanofiber compound silk harness, can the advantage such as continuous seepage, very suitable large-scale production, has important application prospect.But in electrostatic spinning process, the mode that nanofiber is mainly piled up with physics is deposited on tow surface, lacks strong interaction or adhesion between the two in recombination process.Find in research practice, piled up the nanofiber compound tow formed by physics, its interfacial-adhesion strength is low, and nanofiber easily comes off, and can produce the wadding thing that wafts in the process making cigarette filter rod, hinders carrying out continuously of production, has a strong impact on filter rod quality.
Also how not improve the bibliographical information of interfacial-adhesion strength between nanofiber and tow at present, more not having can for the technology of production application and technique.
Summary of the invention
The invention provides a kind of preparation method of high interfacial-adhesion strength nanofiber compound tow, the interfacial-adhesion strength between nanofiber and pipe tobacco can be increased, be beneficial to the steady production of filter tip, meanwhile, high-specific area nano fiber has stronger suction-operated to the phenol in cigarette smoke and 4-methyl nitrosamino group-1-(3-pyridine)-1-butanone (NNK).
A preparation method for high interfacial-adhesion strength nanofiber compound tow, comprises the following steps:
(1) polymer, additive and solvent are mixed with spinning solution;
Described polymer is at least one in cellulose diacetate, Triafol T, hydroxyethylcellulose, polyvinyl alcohol, shitosan;
Described additive is at least one in ethylene glycol, glycerol, pentaerythrite, two acetoglycerides, triacetyl glycerine, glycerol trioleate, glycerine palmitate, stearine;
(2) take pipe tobacco as base material, electrostatic spinning is carried out to the spinning solution of step (1) gained, obtain described high interfacial-adhesion strength nanofiber compound tow.
The present invention introduces at least one additive in spinning solution, the additive introduced has relatively high viscosity and boiling point, in electrostatic spinning process, there is relatively slow evaporation rate, good cementation can be played to nanofiber and pipe tobacco, and nanofiber or pipe tobacco can not be dissolved completely.
Described additive significantly strengthens the interfacial-adhesion strength of nanofiber and pipe tobacco in electrostatic spinning process, solve the interfacial-adhesion strength between nanofiber and accompanying pipe tobacco formed by physics sedimentation low, nanofiber easily comes off, and produces the problem of the wadding thing that wafts in cigarette filter rod manufacturing process.
The additive introduced is while raising pipe tobacco and nanofiber interfacial-adhesion strength, do not destroy the structure of nanofiber, give the specific area that nanofiber compound tow is higher, enable nanofiber compound tow effectively adsorb phenol in cigarette mainstream flue gas and NNK, reduce the burst size of phenol and NNK in cigarette mainstream flue gas.
Preferably, described solvent is at least one in acetone, DMF, water, acetic acid.The selection gist polymer of solvent and the difference of additive and different, be advisable can form homogeneous phase solution with polymer and additive.
In order to ensure that spinning solution has suitable viscosity and spinnability, make the nanofiber obtained have suitable size, Pyrogentisinic Acid and NNK have good adsorption effect, and preferably, in described spinning solution, the mass ratio of polymer and solvent is 0.04 ~ 0.15:1.Further preferably, the mass ratio of polymer and solvent is 0.08 ~ 0.15:1.
Additive is for improving the interfacial-adhesion strength of nanofiber and pipe tobacco, if addition is too much, can impact the performance of nanofiber, preferably, in described spinning solution, the mass ratio of additive and polymer is 0.5 ~ 2:1.Further preferably, the mass ratio of additive and polymer is 0.5 ~ 1:1.
In the present invention, pipe tobacco adopts cellulose acetate tow, needleless hair style electrostatic spinning technique is adopted to prepare nanofiber, spinning electrode iron wire surface coating skim spinning solution is made by moving back and forth of carrier fluid groove, after applying voltage exceedes critical value, first the spinning solution on spinning electrode iron wire surface forms various taylor cones, then be drawn into very beam jet, then move through whip, form nanofiber.
When step (2) carries out electrostatic spinning, spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the winding speed of distance (i.e. receiving range), spinning voltage and the pipe tobacco between spinning electrode iron wire and pipe tobacco, obtain the nanofiber of diameter at 80 ~ 500nm.
As preferably, in step (2), spinning voltage is 10 ~ 50kV, and receiving range is 5 ~ 25cm, and the winding speed of pipe tobacco is 50 ~ 400m/min.
Further preferably, in step (2), spinning voltage is 35 ~ 50kV, and receiving range is 15 ~ 25cm, and the winding speed of pipe tobacco is 50 ~ 200m/min.
Tow, after electrostatic spinning region composite nanofiber, utilizes infrared oven dry, and baking time is 1 ~ 60s, to remove residual additive.
The preparation method of high interfacial-adhesion strength nanofiber compound tow provided by the invention is simple, is applicable to continuous seepage, can ensures the quality of processing the cigarette filter obtained further.Adopt needleless hair style electrostatic spinning technique production efficiency high, can not produce the problem of blocking syringe needle, easy to maintenance, enclosed mobile carrier fluid groove can ensure the constant of concentration of dope, can long-time stable spinning, is conducive to the large-scale production carrying out serialization.
Present invention also offers a kind of high interfacial-adhesion strength nanofiber compound tow utilizing described preparation method to obtain, described high interfacial-adhesion strength nanofiber compound tow comprises pipe tobacco and is deposited on the nanofiber on pipe tobacco surface, and the diameter of described nanofiber is 80 ~ 500nm.
In order to have better removal effect to the phenol in cigarette mainstream flue gas and NNK, preferably, the diameter of described nanofiber is 100 ~ 350nm.
High interfacial-adhesion strength nanofiber compound tow provided by the invention is in the process preparing cigarette filter rod, the wadding thing that wafts can not be formed, more effectively can keep form and the high-specific surface area of nanofiber, strengthen the adsorption effect to phenol in main flume and NNK.
Pipe tobacco deposits appropriate nanofiber, to ensure the removal effect of Pyrogentisinic Acid and NNK, preferably, the mass ratio of described nanofiber and pipe tobacco is 0.002 ~ 0.08:1.
Further preferably, the mass ratio of described nanofiber and pipe tobacco is 0.05 ~ 0.08:1.
Present invention also offers a kind of cigarette filter, rolled by described high interfacial-adhesion strength nanofiber compound tow and cigarette paper and form.
The cigarette filter using described high interfacial-adhesion strength nanofiber compound tow to prepare, effectively can reduce the burst size of phenol and NNK in cigarette mainstream flue gas, and the burst size of phenol reduces the burst size reduction by 12 ~ 36% of 16 ~ 30%, NNK.
Accompanying drawing explanation
Fig. 1 is the electromicroscopic photograph of the common cellulose acetate tow that commercial cigarettes filter tip uses;
Fig. 2 is the electromicroscopic photograph of nanofiber compound tow in comparative example 1;
Fig. 3 is the electromicroscopic photograph of high interfacial-adhesion strength nanofiber compound tow in embodiment 1.
Detailed description of the invention
By following examples, the present invention is described in more detail, but described embodiment is not construed as limiting the invention.
Comparative example 1
8g cellulose diacetate and 100g acetone are configured to even spinning solution, spinning solution are placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 15cm, adjustment spinning voltage is 32kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 100m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 110 ± 30nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 5s, i.e. obtained nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.020:1, and typical electromicroscopic photograph is shown in Fig. 2.Obtained nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, in process, has the wadding produce that waft on a small quantity raw.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and its typical scan electromicroscopic photograph is shown in Fig. 1, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Setting pumping volume in suction experiment is 35mL, and suction time is 2s, and puff interval is 58s, and following examples if no special instructions, all adopt identical experiment condition.
Embodiment 1
8g cellulose diacetate, 8g glycerol and 100g acetone are configured to even spinning solution, and wherein the mass ratio of cellulose diacetate and acetone is 0.08:1, and the mass ratio of glycerol and cellulose diacetate is 1:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance (i.e. receiving range) between spinning electrode iron wire and tow to be 15cm, adjustment spinning voltage is 32kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 100m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 110 ± 32nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion is behind electrostatic spinning region, enter infrared lamp bake region, baking 5s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, wherein the mass ratio of nanofiber and pipe tobacco is 0.020:1, and typical electromicroscopic photograph is shown in Fig. 3.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Comparison diagram 1 and Fig. 3 can find out, in embodiment 1, more nanofiber is attached to the surface of pipe tobacco.
Embodiment 2
By 8g Triafol T, 8g ethylene glycol and 100gN, dinethylformamide is configured to even spinning solution, and wherein the mass ratio of Triafol T and DMF is 0.08:1, and the mass ratio of ethylene glycol and Triafol T is 1:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 15cm, adjustment spinning voltage is 32kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 100m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 120 ± 32nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 5s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.021:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Embodiment 3
4g hydroxyethylcellulose, 4.4g pentaerythrite and 100g acetone are configured to even spinning solution, and wherein the mass ratio of hydroxyethylcellulose and acetone is 0.04:1, and the mass ratio of pentaerythrite and hydroxyethylcellulose is 1.1:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 15cm, adjustment spinning voltage is 32kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 400m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 95 ± 20nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 5s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.002:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Embodiment 4
By 15g cellulose diacetate, 15g bis-acetoglyceride, 20gN, dinethylformamide and 80g acetone are configured to even spinning solution, wherein the mass ratio of cellulose diacetate and DMF is 0.15:1, and the mass ratio of two acetoglycerides and cellulose diacetate is 1:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 15cm, adjustment spinning voltage is 32kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 80m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 300 ± 40nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 5s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.080:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Embodiment 5
4g cellulose diacetate, 8g triacetyl glycerine and 100g acetone are configured to even spinning solution, and wherein the mass ratio of cellulose diacetate and acetone is 0.04:1, and the mass ratio of triacetyl glycerine and cellulose diacetate is 2:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 5cm, adjustment spinning voltage is 50kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 100m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 100 ± 20nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 60s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.018:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Embodiment 6
10g cellulose diacetate, 5g hydroxyethylcellulose, 7.5g glycerol trioleate and 100g acetone are configured to even spinning solution, wherein the mass ratio of cellulose diacetate and acetone is 0.15:1, and the mass ratio of hydroxyethylcellulose and cellulose diacetate is 0.5:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 25cm, adjustment spinning voltage is 50kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 100m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 500 ± 40nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 5s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.035:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Embodiment 7
4g cellulose diacetate, 4g glycerine palmitate and 100g acetone are configured to even spinning solution, and wherein the mass ratio of cellulose diacetate and acetone is 0.04:1, and the mass ratio of glycerine palmitate and cellulose diacetate is 1:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 5cm, adjustment spinning voltage is 10kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 50m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 80 ± 15nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 1s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.017:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Embodiment 8
8g shitosan, 8g stearine and 100g acetic acid are configured to even spinning solution, and wherein the mass ratio of shitosan and acetic acid is 0.08:1, and the mass ratio of stearine and shitosan is 1:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 15cm, adjustment spinning voltage is 32kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 100m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 110 ± 32nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 5s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.020:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Embodiment 9
15g polyvinyl alcohol, 30g glycerol and 100g water are configured to even spinning solution, and wherein the mass ratio of polyvinyl alcohol and water is 0.15:1, and the mass ratio of glycerol and polyvinyl alcohol is 2:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 25cm, adjustment spinning voltage is 50kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 100m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 110 ± 32nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 5s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.023:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Embodiment 10
8g cellulose diacetate, 8g glycerol and 100g acetone are configured to even spinning solution, and wherein the mass ratio of cellulose diacetate and acetone is 0.08:1, and the mass ratio of glycerol and cellulose diacetate is 1:1.Spinning solution is placed in the carrier fluid groove of needleless hair style electrostatic spinning machine, regulate the distance between spinning electrode iron wire and pipe tobacco to be 15cm, adjustment spinning voltage is 32kV; By pipe tobacco shredding to fabric width 25cm, setting pipe tobacco transfer rate is 100m/min.
Open electrostatic spinning electromechanical source to setting voltage, it is the nanofiber of 110 ± 32nm that spinning solution forms diameter, and is deposited on the pipe tobacco surface after the shredding of motion continuously, forms nanofiber compound tow; The nanofiber compound tow of continuous motion, behind electrostatic spinning region, enters infrared lamp bake region, baking 5s, i.e. obtained high interfacial-adhesion strength nanofiber compound tow, and wherein the mass ratio of nanofiber and pipe tobacco is 0.025:1.Obtained high interfacial-adhesion strength nanofiber compound tow is rolled into cigarette filter rod on filter-stick forming device, raw without the wadding produce that obviously waft in process.
CeruleanSM450 type smoking machine is adopted by the sample cigarette rolled to carry out cigarette smoking experiment according to ISO3308 pattern, the burst size of phenol and NNK in measure and calculation main flume.Adopt the commercial cigarettes cigarette in contrast of same specification, its cigarette filter adopts common cellulose acetate tow to prepare, and cigarette preparation method and cigarette smoking method are all identical with sample cigarette.The results are shown in Table 1.
Table 1
| Sample name | Phenol release amount μ g/cig | NNK release amount ng/cig |
| Comparative example 1 | 10.64 | 3.01 |
| Embodiment 1 | 8.13 | 2.25 |
| Embodiment 2 | 8.42 | 2.28 |
| Embodiment 3 | 9.67 | 2.89 |
| Embodiment 4 | 8.00 | 2.08 |
| Embodiment 5 | 8.77 | 2.41 |
| Embodiment 6 | 8.91 | 2.43 |
| Embodiment 7 | 8.83 | 2.51 |
| Embodiment 8 | 8.55 | 2.28 |
| Embodiment 9 | 8.15 | 2.20 |
| Embodiment 10 | 8.02 | 2.17 |
| Contrast cigarette | 11.45 | 3.27 |
Can be drawn by table 1, the nanofiber compound tow that comparative example 1 prepares is in filter tip, phenol reduction by 7%, NNK in cigarette mainstream flue gas is only made to reduce by 8%, this is because the interfacial-adhesion strength between nanofiber and pipe tobacco is lower, when obtained nanofiber compound tow rolls into cigarette filter rod on filter-stick forming device, part nanofiber is removed, and does not play the effect enlarging markedly specific area.
Compared with comparative example 1, embodiment 1 ~ 10 due to the interfacial-adhesion strength of nanofiber and pipe tobacco higher, in the process of rolling cigarette filter stick, nanofiber not easily departs from from pipe tobacco, thus ensureing that there is higher specific area, the removal effect of Pyrogentisinic Acid and NNK is better.
Claims (8)
1. a preparation method for high interfacial-adhesion strength nanofiber compound tow, is characterized in that, comprise the following steps:
(1) polymer, additive and solvent are mixed with spinning solution;
Described polymer is at least one in cellulose diacetate, Triafol T, hydroxyethylcellulose, polyvinyl alcohol, shitosan;
Described additive is at least one in ethylene glycol, glycerol, pentaerythrite, two acetoglycerides, triacetyl glycerine, glycerol trioleate, glycerine palmitate, stearine;
(2) take pipe tobacco as base material, electrostatic spinning is carried out to the spinning solution of step (1) gained, obtain described high interfacial-adhesion strength nanofiber compound tow.
2. the preparation method of high interfacial-adhesion strength nanofiber compound tow as claimed in claim 1, is characterized in that, in described spinning solution, the mass ratio of polymer and solvent is 0.04 ~ 0.15:1.
3. the preparation method of high interfacial-adhesion strength nanofiber compound tow as claimed in claim 1, is characterized in that, in described spinning solution, the mass ratio of additive and polymer is 0.5 ~ 2:1.
4. the preparation method of high interfacial-adhesion strength nanofiber compound tow as claimed in claim 1, it is characterized in that, described solvent is at least one in acetone, DMF, water, acetic acid.
5. the preparation method of high interfacial-adhesion strength nanofiber compound tow as claimed in claim 1, it is characterized in that, in step (2), spinning voltage is 10 ~ 50kV, receiving range is 5 ~ 25cm, and the winding speed of pipe tobacco is 50 ~ 400m/min.
6. one kind utilize as arbitrary in Claims 1 to 5 as described in the high interfacial-adhesion strength nanofiber compound tow that obtains of preparation method, it is characterized in that, described high interfacial-adhesion strength nanofiber compound tow comprises pipe tobacco and is deposited on the nanofiber on pipe tobacco surface, and the diameter of described nanofiber is 80 ~ 500nm.
7. high interfacial-adhesion strength nanofiber compound tow as claimed in claim 6, it is characterized in that, the mass ratio of described nanofiber and pipe tobacco is 0.002 ~ 0.08:1.
8. a cigarette filter, is characterized in that, is rolled form by high interfacial-adhesion strength nanofiber compound tow as claimed in claims 6 or 7 and cigarette paper.
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